Tag Archives: Histamine

Weekly roundup

I have had a horrendous few days.  The depths to which people can be vicious and vindictive shocks me, especially when they are grown adults.  I have alternated all week between being  angrily defiant to being a weepy, crumbling wreck – I am too ill for this crap which is wholeheartedly undeserved.  I wrote about the situation in my last post so I won’t harp on.

As if being slandered and publicly humiliated weren’t bad enough, I have had one of the worst colds in years this week.  It started with an 8 day migraine, then came razor blades every time I swallowed and three days later the sneezing, streaming and coughing began and to add insult to injury I still have a banging head.  Due to that, and the almost unbearable stress of recent events at my Camera Club, I have barely eaten or slept for days.  The Pheasant splattered by a car on the road outside my house feels better than me today.

I have felt so poorly I have done nothing and seen no-one.  I speak like Donald Duck, cough like a 40-a-day chain smoker and you can image what massive stress + a virus has done for my M.E.   Consequently I really don’t have much to tell you.

The only bright light on the horizon is the news that I won another photography medal this week at an international Salon.  Silver, for my new picture called ‘On the shelf‘.  My friend told me she now has congratulations fatigue.  Another medal?  Yeah, whatever……. 😀

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Weekly roundup

This week has been physically tough.  My period arrived (I swear I’ll still need sanitary products when I’m dead cos Aunto Flo is showing zero signs of buggering off!) and I am currently on day 7 of a migraine.  My knees and elbows are having a pain flare for reasons unknown and I’m still so brain fogged/exhausted I feel like I’m drugged.  But other than that I’m good 😉

On Monday I took my Mum through to the city to visit the hearing aid clinic at the Hospital.  She wears two hearing aids but they simply won’t stay in her ears and she’s already lost one which dropped out as she went round the supermarket.  It turns out she has very narrow ear canals and even the smallest aid is too big, so they’re custom making her ones which sit inside the ear itself instead.  As my Mum rarely gets out of the house we made a day of it, having our lunch out and a tootle round Matalan as it’s all on the flat for the wheelchair and has a good sized disabled changing room.

The rest of the week I’ve been trying to organize repairs to my car port, the back of which is made of old wood which has totally disintegrated.  All was going fine until we discovered asbestos and then it was on to plan b!  When you have M.E. you barely have the energy to get dressed let alone for events to go belly up.  So now the job is much more complicated than I expected and will take twice as long – of course it will, because Mr Sod has it in for me.

As I wrote about in this post my Dad and I made a last minute trip to the Hospital in Newcastle on Friday.  I was expecting them to finally say his neuropathy was idiopathic (ie no explanation could be found) and to tell him he just has to learn to live with it, however they’ve said that idiopathic neuropathy isn’t usually progressive and severe like my Dad’s so they are still searching for a cause, which is great news but means yet more 180 mile trips to the Hospital for tests and appointments which nearly kills me and takes a week to get over.

Yesterday I found out I’d won two more trophies for my photography in an annual competition which involves all 52 camera clubs across the north of England 🙂  I genuinely wasn’t expecting them so am tickled pink.  However, my joy was momentarily marred by the news that a smear campaign has now been started against me by the bullies at my Camera Club who are saying I’m writing shit about my Club on Facebook.  It is blatantly untrue.  I have written one post on Facebook about their behaviour and the way they have treated me, in a measured non-ranty way and mentioning no names, but would never in a million years ever trash my club because I’ve loved being a part of it.  The sad part is, people who aren’t even on my Facebook and haven’t read the post are believing the bullies 😦  This is what bullies do when their behaviour is exposed – they deflect negativity away from themselves and on to the victim, who eventually ends up the bad guy.  That people fall for this bollocks is really fucking disappointing.  When I find myself questioning why this situation has come about I like to read this quote and remember it’s not about me, it’s about the bullies’ inner demons:

Today I am looking forward to meeting my bestie for lunch and a catch up, but first I am eager to take the mutt out for his morning constitutional.  Spring has officially sprung here in the UK and there is no prettier place on earth.  The hedgerows are covered in fluffy blossom, daffodils nod in the breeze, birds are busily nesting, I saw my first butterfly yesterday even though there is still a sprinkling of snow on the fells and as Bertie and I wander by the river, hoping to catch a glimpse of wild Otter, I am thankful every day to live where I do 🙂

 

 

MCAD v HIT

I’ve noticed that whenever I talk about histamine and food here on my blog there is often confusion about the cause of food reactions, so I thought I’d write down my take on what’s happening.  I’m no expert, though, just a patient along with the rest of you so I could be well off the mark and I’m sure if I am someone will point it out 😉 .

I’ve had MCAD my whole life, but I have never reacted to foods.  I don’t have a nut allergy, or a gluten allergy, for example and have always been able to eat whatever I like.  I know I’m extremely lucky and many of my readers aren’t so fortunate.

I only started reacting to food when I was in my mid forties.  It came on gradually over a few years.  Bright red flushing after meals, increasingly itchy skin, hives which I’d never had before and out-of-control acid reflux.  Eventually in 2013 all hell broke loose and I started having anaphylactic reactions after I ate anything – severe palpitations, muscle spasms (particularly in my gut and back), weird head rushes that felt like I was having a stroke, anxiety (obviously the whole situation made me anxious, but the adrenalin fuelled anxiety from anaphylaxis is a different thing altogether), huge spikes then huge crashes in blood pressure, and eventually I’d just pass out.  It was terrifying and I had absolutely no clue what was going on.

To cut a very long story short I paid to see Dr Seneviratne at St Mary’s, who tested my DAO levels which were well below normal and he diagnosed me with Histamine Intolerance (HIT).  I’d never heard of the disease before so it was a steep learning curve!   Most foods contain small levels of histamine but some foods contain large amounts.  I don’t eat meat, and it turns out that many of the staple vegetarian foods I was eating every day (cheese, tinned tomatoes, soya beans, spinach, aubergiene) are all high in histamine :-/  Our bodies also produce histamine as part of the digestive process which is why I could react some days after drinking just water!   Fortunately we have a couple of enzymes in our bodes, DAO and HNMT, which ‘mop up’ the histamine we ingest so that it doesn’t cause us any problems.  For people with HIT, however, the enzymes are low or not working correctly so the histamine we eat in foods, and the histamine produced from digestion, accumulate in our bodies.  It’s a bucket effect – the more histamine we eat the more it builds up, and eventually the bucket overfills and we have a reaction.  No one specific food does this – it’s a cumulative effect.  I embarked on a low histamine diet and within 4 months my food reactions were under control – they hadn’t gone, but they were manageable.

There are various reasons why, if we suffer from Histamine Intolerance, our DAO and/or HNMT levels could be low.  For example, they can be reduced by taking certain medications, in which case if you cease taking the drugs the enzymes should return to normal and the HIT would only be temporary.  In my case, however, I have no idea why my DAO isn’t as it should be – I wasn’t on any drugs, my diet was very healthy and I hadn’t had any major tummy bugs or infections.  For me, HIT seems to be a permanent problem and if I veer off my low histamine diet the anaphylactic reactions come back within a couple of weeks 😦

Because histamine build-up in HIT is a bucket effect, I can often have no problems eating my breakfast in the morning but I can quite often react to my dinner in the evening, because histamine has accumulated during the day.  So I tend to eat my main meal at lunchtime and just have a small snack at night.

The food issues faced by HIT patients are very different to the food issues faced by many Mast Cell Disease patients.  In MCAD the immune system is treating totally normal foods as a foreign invader and mounting a defence against them.  It could be any food and will differ from patient to patient.   It is not a build-up and the reaction comes on soon after the food is eaten (although some people do have mild, delayed reactions which muddies the waters!).  In MCAD our mast cells release chemicals including, but not limited to, histamine which then gives us an allergic-type reaction.   Our immune system doesn’t care whether the food is high in histamine or not – it can react to any food it likes which makes treating MCAD food reactions much harder than treating HIT food reactions!   For some people with MCAD the immune system is so over-reactive they are left with only a handful of foods that are ‘safe’ 😦

It’s important to note that in MCAD the immune system doesn’t just react to food – our mast cells can react adversely to just about anything in our environment.  My biggest reactions are to drugs – my mast cells hate them – but I also react to stress, hormones, some smells, pollen, my dog and often my own emotions.

The biggest difference between HIT and MCAD, is that HIT is a food issue only Stop eating high histamine foods and it is possible to get your HIT under control.  In MCAD the issue is much, much wider and not eating high histamine foods won’t alter the fact your mast cells react to hairspray, the smell of bleach or your hamster.

MCAD and HIT are totally distinct and separate illnesses – you can have HIT without having MCAD, and MCAD without having HIT.  However, if you’re unlucky enough to have both they can definitely affect each other and I think that’s where much of the confusion around food comes from.  I have people comment on my blog that they are following a low histamine diet but still reacting to all sorts of foods and of course they will if they suffer from mast cell disease.  Following a low histamine diet will only stop reactions after eating if you suffer solely from HIT.  It might reduce your symptoms if you have MCAD, because if your body is already over-whelmed by histamine adding to the load by eating lots of food high in histamine probably won’t help the situation, but a low histamine diet most definitely won’t cure all your symptoms which are caused by factors other than food.  At least that’s been mine and my friends’ experience.  So it’s important to know whether you’re suffering from HIT, MCAD or a combination of the two because management strategies will be very different, and you can only know this if you are tested by someone knowledgeable in both diseases (easier said than done I know, especially in the UK).

As far as I know there is no data available on whether HIT is more common in the mast cell disease population.  It would be interesting to know if there’s a link, because every piece of the puzzle is important when we’re trying to work out what causes disease and how to treat it.

 

The Holy Grail

I have had a big day.  BIG.  Huge.  If you’ve never seen the film ‘Pretty Woman’ you won’t get the reference, but trust me when I say today may have been a game changer.

The Holy Grail for anyone suffering from Histamine intolerance (HIT), and people with Mast Cell Disease who find it necessary to follow a low histamine diet, is the ability to test the food we eat for histamine.  The reason it’s so vital is that many factors affect histamine formation, the main ones being how old a food is and how it’s been stored.   A lab testing the histamine content of imported strawberries that have spent weeks travelling from Israel, for example, may come up with a very different result than if they’d tested strawberries taken straight off a bush in their garden.  And how do we know if a specific strain of British strawberries have the same histamine content as a specific strain of Spanish strawberries?  The answer is, we don’t.  Realistically the only way to test the amount of histamine in the food we eat is to actually test the food we eat, and my food here in the UK will be different to the food you might be eating in the States, Europe, Australia, Asia or anywhere else on the planet.

In October 2018 I wrote this post about researchers at City University of Hong Kong who were developing a way of testing for histamine using your mobile phone and a sensor.  Well, today I had the joy and privilege of meeting one of the researchers, Victor Lau, while he was on a short trip to the UK.  I have been excited all week waiting to meet Victor and was not disappointed.  He was absolutely lovely and has given me permission to talk about our meeting and the home histamine testing device.

Hong Kong practically lives on fish and seafood but food standards aren’t as good as they might be, so since 2016 the researchers have been working on a way to test for histamine in seafood for use in the commercial food industry.  The research is Government funded so not driven by profit.  Until I emailed them back in October they had never heard of Histamine Intolerance or Mast Cell Diseases and are now hugely interested in our plight.  Victor made a point of telling me that it’s not through any desire to make money out of us – they genuinely love the idea of helping patients and when the device becomes available to buy they will keep the cost as low as they possibly can.

I have to stress that the current device is a prototype and still being refined.   There’s a long way to go to reach a saleable product, not least because the results have to be rigorously accurate if you’re dealing with sick people and allergic reactions and then the device would need the relevant Governmental approval, however I’m assured that we’re only talking 3-4 months before a working prototype would be available for me to test 😮

The equipment needed for the current testing system is as follows:

  • An app for your phone.  They gave me the app and it was a doddle to install on my Android phone.
  • The testing device, which is about half the size of a mobile phone.
  • Some testing strips – these slot into the side of the testing device and you place your food sample on the strip.
  • Some food to test, preferably something which can be formed into a liquid when mixed with water.
  • Some distilled water.
  • Some weighing scales able to measure in individual grams.
  • A dropper.

Here’s a picture of today’s set-up:


This is how the testing currently works:

  • Place a sterile pot on the weighing scales.
  • Measure out 1gram of food into the pot.
  • Add the same amount of distilled water.
  • Mix together until you have a liquid thin enough to pass through a dropper.
  • Open the app on your phone – it gives you guided instructions as to how to conduct the test.
  • Using a dropper, place 2 drops of the food mixture onto the end of the testing strip (that’s the small orange-coloured strip sticking out of the right side of the device in the middle left of the picture).  Wait 2 minutes for this to be measured and registered.  Wipe off.
  • Add 2 drops of distilled water onto the testing strip to re-calibrate.
  • Repeat another 4 times, alternating food and water.
  • An average histamine content will be calculated from these 5 samples.
  • At least, I’m hoping I’ve got the technique correct – I’m no scientist and it was all new to me!  I’ll show the guys this post and they can correct me if I’ve got something wrong.

Victor about to weigh tea!

The process is a little time consuming, taking about 10 minutes per food item, but it’s really easy to do.  Currently it’s not something you’d be able to do in a restaurant, but I don’t care so long as I can test the food I eat at home!  Speaking of which, Victor asked me to take some food samples along to be tested.  They’d never tried the device on anything other than seafood, so were as excited to see the results as I was!  However, the device is currently only calibrated to test for histamine above 100ppm (parts per million), which is a safe level for healthy people but of course not for those of us who have to follow a low histamine diet – we need to be able to test for 20ppm at the very least and Roy Vellaisamy, Victor’s colleague in Hong Kong who I spoke to today on the phone, assures me this should be possible.  So bear in mind today we could only say if a food was below 100ppm or above 100ppm but not give a precise figure.

I miss tomatoes sooooooo much, so the first food tested was tinned, chopped tomatoes from Tesco.  They tested above 100ppm so there’s no way you could include them in a low histamine diet 😦  However, I’d also taken with me a fresh tomato and this tested below 100ppm!  We’ve no idea, though, how much below – it could be 10ppm or 99ppm so tomatoes are still not a food I’ll be eating until I know for sure how much histamine they contain.  Interestingly, Victor re-tested the fresh tomato a couple of hours after I left, which by this time had been out of the fridge and in a warm environment for several hours.  It now tested above 100ppm, which on the surface looks as if histamine had formed rapidly in the warm environment in which Victor was testing.  However, it may not be quite that cut and dried.  We only know it initially tested below 100ppm, but we don’t know by how much – it could actually have been 99ppm.  And in the second test, we only know it tested above 100ppm, but again we don’t know by how much – it could just be 101ppm.  Of course, on the other hand it could be that it tested as low as 30ppm on the initial test, but after being kept at room temperature for several hours it had reached histamine levels of 190ppm!  The ability to test precise levels of histamine in a food sample is something which would be vital to us if the device were to be useful to us as a patient population.

The next food I wanted to test was a good old British brew (well, actually, my tea was organic black Clipper tea from some far off land 😉 ).  I was gutted when this tested above 100ppm (and that’s without adding milk) but I have to be honest and say I still don’t think I can give my daily cuppa up.  Histamine is a bucket effect, and as long as my bucket is low from eating foods low in histamine the odd cup of tea shouldn’t fill the bucket too much and tip me over the edge and into a reaction.  That’s my excuse anyhow and I’m sticking to it 😉

By this time my train home was almost due, so I had to leave my other samples with Victor to test in my absence.  I’d taken some Quorn mince and some cocoa powder, so I’ll let you know the results when I have them.

Today has felt like a watershed day for those of us with HIT and/or MCAD.  I can’t stress enough how interested both Roy and Victor are in our situation, how generous and lovely they are being with me and how much they genuinely want to help.  It certainly makes a change from the usual way we rare disease patients are treated.  I told Victor that HIT seems to be much more recognized in Germany than here in the UK, and he luckily has a close colleague who lives in Germany whom he can find out more from.   For my part, I gave him Dr Seneviratne’s details being as though he’s the leading HIT & MCAD doctor in the UK and is so knowledgeable on all things histamine.

Victor stressed that they want to make a device which is useful to us, so if any of you have any questions please do comment below this post and I’ll forward them all.  I have every faith that, with a bit of tweaking, the device could be brilliant for us – the ability for you to be able to test the food you eat, and for me to be able to test the food I eat, would be awesome and something I didn’t even dream would be possible.  Not only that, but Victor thought it wouldn’t be too difficult to develop the device to test for things other than histamine – nuts, for example, or gluten!  All that would be needed is a separate testing strip whose receptors bind to gluten instead of histamine – the rest of the testing kit, ie the app and device, would remain the same.  Imagine the possibilities in our modern world where food allergies are rampant!

Watch this very exciting space 🙂

 

 

 

Weekly roundup

I’ve had a fairly quiet week for a change and it’s been nice to relax and have some time to myself.  I had a pleasant day on Monday going up the lakes with my friend for his birthday – he was widowed 2 years ago and is still grieving for his wife, so I was happy he’d asked me out rather than moping around on his own at home.

Wednesday evening I’d agreed to do two talks at my Camera Club on various types of software.  Whenever I commit to doing something I worry myself stupid in case I’m ill on the day and have to pull out, but I was fine and it went really well, including good-hearted banter from the audience,   I was finally presented with my certificate for achieving the DPAGB back in November by an official from the Photographic Alliance of Great Britain, who also asked if I’d be guest speaker at his Camera Club in Carlisle next season which was flattering 🙂

I felt physically great at the start of the week, but rubbish by the end of it.  My brain fog today is ridiculous, every part of my body is aching and I have the energy of a zombie.  I’m currently on day 32 of my cycle so am wondering if I’m going to skip a period this time as it’s so late.  All this uncertainty, and not knowing when or if Aunt Flo is going to put in an appearance, is doing my nut in.

I spoke to the GP about my Dad.  His last B12 test twelve months ago was fine, so low B12 is clearly not the cause of his neuropathy.  She’s put him on amitriptylene for his aching leg pain and, being as though he’s also understandably a bit low, I’m hoping it will help.  She also said he most definitely should be tested for Lyme disease, so has arranged for him to have a blood test this week.  To be fair to her, she takes everything I say on board and if I request a test or referral she’s usually more than happy to agree.

I’ve had time to work on another photograph this week.  I live right next to a little village Church, which luckily is still open to the public all day.  Hardly anyone goes in the winter, so I’m able to take my camera in there and have done several photos inside.  As a teenager I seriously considered becoming a Nun but I would have been disastruous at it, on account of the fact I hate being told what to do 😉  I hope no-one is offended by my picture which I’m calling Disobedient – it was simply inspired by my story.

 

Jak’s Low Histamine Diet List

I spent the entire day yesterday re-vamping the Low Histamine Diet here on my blog.  It is now largely evidence based so at least you know the actual histamine content of the foods I list.  Bare in mind that hardly any food has been tested for histamine, so if a food isn’t listed it hasn’t been tested.  As far as I’m aware, this is the only free list available which gives actual histamine values of specific foods, so I hope you find it useful.

As you get your histamine bucket under control most people are able to occasionally eat high histamine foods without symptoms.  I eat chocolate now and again, some tomato puree on a pizza and fish in restaurants which I know isn’t as fresh as it should be and I cope with that OK – my wish is that this knowledge gives people who are newly diagnosed and currently reacting to everything hope.

I eat as wide a diet as I can get away with.  Not only in terms of fresh fruit and veg, but also treats like puddings and sugary snacks – my life is restricted enough without depriving myself any further.   It’s weird, but I react to lovely apples yet have never reacted to nutrionally-deficient rubbish like Starburst or Pringles in my life despite the fact they are packed with preverves and additives! (not that I’m complaining you understand, hell no 😉 )

This diet focuses on histamine alone, but that’s not the end of the story as you will read in the Further Information at the end of the List.  In addition, my MCAD complicates things further and makes me more reactive than I would be if I ‘just’ had HIT, so there are some days I simply have to accept the fact I’m having a reactive day and nothing I can do is going to help.  Having said all that it’s extremely rare these days that I react to any food and that’s solely down to following a Low Histamine Diet.

 

So what CAN I eat?

Following on from yesterday’s post on new research into the histamine content of non-fermented fruit, nuts & vegetables I thought I’d break down the information contained in the paper for us mere mortals to understand.

Histamine Intolerance (HIT) is thought to be caused by low levels of two enzymes: HNMT and DAO.  DAO is an enzyme in the gut which breaks down and converts the histamine we eat in our food, and if levels are low this process isn’t effective and results in high levels of histamine in our bodies (at least, that’s the layman’s version!).  In order to keep symptoms at bay, HIT patients need to stick to a low histamine diet, which makes perfect sense and has worked miracles for me personally.

However, there is very little information on the actual histamine content of foods and the researchers found that many foods excluded from low histamine diets actually have been shown to be low in histamine and therefore are safe to eat which is fabulous news!

What constitutes a high level of food histamine is currently guesswork – we don’t know what ‘high’ is, and safe levels of histamine in food probably differs from patient to patient depending on how well their DAO and HNMT are functioning.  I’m making the assumption that ‘high’ is anything over 20mg/kg but this is a purely made-up number in the absence of any guidelines.  Based on this, then,  the only non-fermented plant foods tested in this research paper and found to be high in histamine are:

  • Eggplant (aubergine)
  • Spinach
  • Avocado is borderline at just over 20mg
  • Fresh tomato & tomato ketchup is borderline at just over 20mg & chopped tomato is fine!

So as you can see, there are less than a handful of non-fermented plant foods which are high in histamine (though of course fermented plant foods like sauerkraut aren’t included and are known to be high in histamine).  I don’t know about you but this tiny list is a massive shock!  To think I’ve been missing out on loads of foods for no good reason for the past five years is heartbreaking.

This isn’t the full picture however.  The research paper suggests that it isn’t just histamine which may be causing a problem for HIT patients.  Other biogenic amines, such as putrescine, compete for DAO and the reason that patients report issues with foods low in histamine may be that they’re high in other amines.  We have no evidence this is true though – bare in mind it’s just a theory and might be totally wrong.

The biogenic amine putrescine is found in nearly all foods to some degree, so again we have no idea what a high level is, so I’m using 20mg/kg as my figure but it’s not based on anything.  The following is a list of ‘high’ putrescine foods – if you react to any of these, none of which are high in histamine, it might be you have an issue with putrescine instead:

  • Green pepper
  • Sweetcorn
  • Tomato, fresh, concentrate & ketchup
  • Peas (fresh & frozen)
  • Soybeans, dried & sprouted (but not soya milk or tofu!)
  • Banana
  • Grapefruit, fresh (juice is borderline)
  • Mandarin
  • Orange
  • Passion fruit
  • Pear is borderline
  • Papaya is borderline
  • Pistachios
  • Wheatgerm (but not bread or other wheat based products)
  • Green beans
  • Purple beans
  • Broccoli was borderline in 1 study but fine in the others
  • Courgette was borderline
  • Cucumber was borderline in 1 study but fine in the others

I regularly eat several of the foods on this list, including bananas, passion fruit, pear, broccoli, courgette, green peppers, sweetcorn and peas and have no problems with them whatsoever.  However, you may have a totally different experience.

Tyramine, another amine, was found in some of the foods tested, though in very low levels.   So using pure guesswork and nothing else I’ve based my ‘high’ figure on foods which contain a level of tyramine of 5m/kg – it’s not based on anything though and could be way off the mark.  Foods with a ‘high’ level of tyramine include:

  • Fresh tomato
  • Avocado
  • Plum
  • Green beans are borderline

Bare in mind that tomatoes and avocado contain relatively high levels of histamine, so you may react to those due to their histamine content, but if you have a problem with plums or green beans it might be due to their tyramine content.

Cadaverine was found in some of the foods tested, though like Tyramine in very low levels.   So using pure guesswork and nothing else I’ve based my ‘high’ figure on foods which contain a level of cadaverine of 5m/kg.  These include:

  • Spinach
  • Soy milk was high in 1 study but fine in the other
  • Tofu
  • Pistachios
  • Green peppers were borderline
  • Banana was high in 1 study but undetectable in the others
  • Grape was borderline
  • Almonds were borderline
  • Sunflower seeds were high in 1 study but undetctable in the other

The biggest question people new to low histamine diets asks is, “now I know what I can’t eat, but no-one tells me what I can eat!” and this new paper helps with this.  There is a long list of plant based foods which are low in all amines including:

  • Lettuce
  • Onion
  • Red pepper
  • Potato
  • Apple, fresh & juice
  • Grape
  • Cherry
  • Guava
  • Kiwi
  • Lemon
  • Mango
  • Peach
  • Pineapple (fresh & juice)
  • Strawberry
  • Hazelnuts
  • Barley
  • White bread
  • Wholemeal bread
  • Corn-based cereal
  • Oats
  • Pasta
  • Rice
  • Asparagus
  • Yellow beans
  • Cabbage
  • Cauliflower
  • Carrots
  • Celariac
  • Chard

If you have symptoms after eating any of these foods it looks like it’s down to a problem not related to biogenic amines and therefore isn’t Histamine Intolerance.

There are some interesting foods on the ‘allowed’ list.  Bread contains yeast and yeast is banned from most low histamine foods lists, however from the research trawl I did for my Histamine in foods: the Evidence page, and from this research paper, baker’s yeast (ie the yeast used in bread) tested low for histamine, it was the yeast extract (a by-product of brewer’s yeast) found in marmite which was the problem.  Many low histamine food lists exclude nuts but most appear to be low in all amines so should be fine.  Soya beans are also excluded on all low histamine lists, yet tofu and soya milk tested low in all amines and soy beans tested low in histamine yet high in putrescine.  It’s the fruit which has shocked me the most though.  Berries, cherries, pears, plums and pineapple are all excluded from low histamine food lists yet all are low in histamine and most are low in all amines so I will be eating strawberries again before the week is out (I already eat blueberries and drink pear juice daily so knew I had no problem with them).

Although dairy foods weren’t looked at in this particular research paper milk, fresh cheeses like mozzarella (but not hard or blue cheeses!), butter, cream and yoghurt have all been found to be low in histamine, though I’m unsure of their other biogenic amine content – I’ll look into that when I’m not suffering from a sickening migraine, which I currently am :-/  Most fresh meats have also tested low for histamine, but again I’m unsure of their other amine content.  So, all in all low histamine diets don’t need to be anywhere near as restrictive as they are which really is great news 🙂

In light of recent evidence I’m going to totally re-vamp the low histamine food list on my blog when I have the time, energy and brain power.  I haven’t been following the list faithfully for a long time and am managing my HIT symptoms really well, so for me the list here on my blog is way too restrictive.  However, as I say all the time, my blog reflects my experience and yours may be totally different.

The new research paper talks about cooking methods and the fact that boiling vegetables reduced their histamine content, sometimes dramatically.  So, if you’re having an issue eating raw veg you might want to try boiling it and eating it cooked instead.

The other thing to mention while I’m on about food reactions is that Mast Cell Activation Disorder (MCAD) and Histamine Intolerance (HIT) are two distinct and separate illnesses.  Patients with HIT only have a problem with amine-related foods, while people with MCAD can react to just about anything so trying to control MCAD symptoms by a low histamine diet alone is fruitless.  The two diseases can sometimes occur together as in my own case, but many people ‘just’ have HIT and most people with MCAD ‘just’ have MCAD, so  when I talk about low histamine diets I’m exclusively talking about controlling HIT.  If people with MCAD find eating low histamine helps some of their symptoms too that’s great but it’s much more complicated than just diet for mast cell diseases.  If you’ve been religiously following a low histamine diet for more than 6 months and are still reacting to foods, or are reacting to foods low in biogenic amines, or are reacting to other things in the environment like heat or cold, your period makes your reactions worse, stress or strong emotions like excitement make your reactions worse and/or your hair is falling out, I would imagine you have more than HIT going on and it’s much more likely you have a mast cell issue.