Histamine Intolerance: Could This Be Another Reason Why You Are Sick?

What-is-Histamine-Intolerance-And-what-can-you-do-about-it

Histamine intolerance is often accompanied by unexplained symptoms such as an itchy tongue and runny nose while eating certain foods such as banana, avocado, or eggplant. Sometimes patients experience a flushed face when drinking red wine, unpredictable menstrual cycles, or unusual headaches & anxiety. Any of these symptoms could be linked to histamine intolerance.

Histamine is a chemical that acts as a neurotransmitter, sending information between your body and your brain. It is also a key player in immune system, central nervous system, as well as your digestive tract. Histamine is found in your stomach acid so it has a role in breaking down food as well.

However histamine is most commonly thought of in relation to the immune system and seasonal and/or food allergies. Histamine causes a sudden and rapid inflammatory response, setting off an alarm within the immune system that invaders are present. As a result, white blood cells are called upon to swiftly identify and eliminate the foreign bodies. It is the quick flood and build up of histamine that can cause symptoms such as headache, itchiness, flushed face, and overall feeling inflamed and uncomfortable.

Histamine works through your bloodstream so high levels that aren’t broken down can potentially harm not only your gut but your lungs, brain, skin, and cardiovascular system. It is for this reason that symptoms can vary from person to person.

Symptoms Commonly Experienced with Histamine intolerance/MCAS:

Light sleeping and difficulty going to sleep
Hypertension
Dizziness or vertigo
Migraines and/or chronic headaches
Cramps
Hives and/or flushing
Anxiety
Fatigue
Irregular or quickened heart rate
Sinus discomfort including congestion, sneezing,
Asthma- Wheezing, labored breathing
Nausea, vomiting

Histamine and Eczema

In addition to the symptoms listed above, excess histamine can make some existing conditions worse. Eczema is an example. Eczema is an inflammatory condition in the skin, sometimes called atopic (allergic) dermatitis. When high histamine foods are consumed, people with less than efficient histamine tolerance may experience an increase in the severity of their eczema.

Histamine and SIBO

SIBO is an intestinal motility disorder that leads to an overgrowth of good or bad bacteria in the small intestine, where few bacteria belong. There are many causes of SIBO however diets high in sugar and refined carbs, antibiotics or other medications that disrupt your delicate microbiome, or physical obstructions in the gut such as scarring from surgeries or Crohn’s disease. You can learn more about SIBO here or more about the connection between Histamine and SIBO here.

Food sensitivities to foods high in histamine, almost always indicate there is something going on in your gut. You can learn more about the Histamine Intolerance Gut Health connection Here.

Histamine and Estrogen

The complexity of histamine intolerance extends to the interaction between histamine, estrogen and progesterone in the female body. Mast cells are a key factor underlying these interactions, with the presence of both estrogen and progesterone receptors on mast cells. The binding of estrogen to mast cell receptors stimulates the expression of H₂ and H₃ receptors, and induces rapid histamine degranulation, synthesis and release. Estrogen can also influence endogenous histamine levels by down regulating DAO activity. This ultimately leads to high histamine levels in the body.

Histamine and The Brain

Having excess histamine goes way above and beyond your typical allergy symptoms. Excessive histamine can also wreck havoc on the brain. Histamine has been shown to play a pivotal role in many psychiatric disorders such as depression, schizophrenia, anxiety. Because histamine plays a role in wakefulness of the brain, too much histamine can overstimulate the brain leading to anxiety and insomnia as well as restlessness. Any unbalance in the chemical makeup of your brain is bound to cause unwanted effects. These side effects can vary drastically from person to person depending on what Histamine receptor (H1,H2,H3,H4) is stimulated. Brain fog, fatigue, and anxiety are all too common for people who suffer with MCAS and histamine intolerance.

Histamine Stress, Panic attacks and Heart palpitations

Histamine receptors are found all throughout the body and as a result, histamine intolerance affects each of us in different ways. The symptoms that present themselves vary based on which o the four histamine receptors are being activated (H1, 2, 3, 4), and where. In the heart, histamine functions as a vasodilator, meaning that it widens our blood vessels, and therefore there is less resistance to blood pumping through the body this causes a drop in blood pressure.

The combination of rapid heart rate and change in blood pressure can cause feelings of high anxiety, especially when they bring with them a pounding heart, shortness of breath, “flushing”, a rise in body temperature, dizziness, and/or redness in the face. Some people might feel that they are having a panic attack, when in reality the problem is excess histamine.

Inflammation in the brain caused by excess histamine has also been linked to anxiety as well as vertigo, vomiting, nausea and headaches. While the causes of histamine intolerance vary (and therefore so does the solution), a low-histamine diet is often a great place to start.

Microorganisms in the Large Bowel

There are a large number of microorganisms that are capable of producing histamine. Many of the bacteria that live in the human large bowel produce histidine decarboxylase and are capable of converting the histidine in any protein that enters the bowel into histamine. Therefore, the more microorganisms that produce histidine decarboxylase that are present in the colon, and the greater the amount of protein material that enters the bowel, the higher the level of histamine in the digestive tract. From here, histamine can be conveyed through the bowel wall to various sites in the body- where they then cause a variety of symptoms.

Causes of Histamine Intolerance

Histamine intolerance is caused by the bodies decreased ability to breakdown histamine. The next question we should be asking is, “what would interfere with the bodies ability to do this?” Over loaded histamine levels are brought on by a number of factors.

Gut Dysbiosis
Small Intestinal Bacterial overgrowth (SIBO)
leaky gut syndrome
Food Allergies
GI bleeding/Inflammation (Ulcers, Crohn’s)
Certain Amino Acids ie Histidine.
Histamine Rich foods such (see list below)
Food sensitivities
Genetic mutations or SNP’s- can prevent the break down of histamine as well.
Mold Allergies
Mold Biotoxins (CIRS)
Hormones (Thyroid and Sex Hormones)
Medications: can induce a vitamin deficiency that block the functioning of the DAO and HNMT gene. (You can read more about this below)

Nutritional deficiencies include Iron, Copper, Riboflavin (B2), B12, B6, SAMe, and vitamin C. Deficiency in these vitamins can block the functioning of the DAO or HNMT enzyme.

Because the body already produces histamine naturally, histamine levels can quickly rise when the diet includes foods that are high in histamine, that cause the release of more histamine, and enzyme blocking foods that inhibit the break down of histamine.

This is where HistDAO and our Histamine Intolerance Support Pack can help start the healing process.

Hist DAO Naturally Helps

Supports Healthy Degradation of Food-Derived Histamine*
Enhances the Presence of Diamine Oxidase in the Digestive Tract

Foods High in Histamine:

Processed meats such as deli meat, hot dogs, bratwurst, pepperoni, salami, bacon
Vinegar rich foods such as pickles, olives, mayonnaise, relishes, dressings, ketchup
Fermented foods such as sauerkraut, yogurt, soy sauce, kombucha, kefir, pickled vegetables- Yes you read that correctly- The very foods you might be eating because of the gut healing properties may be making you worse.
Soured food such as sour cream, sourdough, buttermilk
Dried fruit such as raisins, apricots, cranberries, dates
Citrus fruits
Aged cheese
Raw and roasted nuts: peanuts, cashews, walnuts

Learn more about which foods are High in Histamine and should be avoided

Foods that release Histamine: (Histamine Liberators)

Fruits:
- banana
- papaya
- pineapple,
- strawberries
Tomato
Shellfish
Wheat germ
Cow’s milk
Alcohol
Chocolate
Nuts
Several dyes and preservatives
foods that is reheated.

Learn more about Proteins, Preservatives and vegetables that are high in Histamine-

How to Break down Histamine

Enzymes in the central nervous system and digestive tract are responsible for breaking down histamine. The HMT enzyme supports break down in the central nervous system while diamine oxidase (DAO) plays a primary role within the digestive tract. Because DAO is most responsible for breaking down histamine, any deficiency in DAO or the vitamins that active the enzyme need attention.

Order HistDAO here or our Comprehensive Histamine Intolerance Support Pack

Boosting DAO Enzyme Activity Naturally| When You Have Histamine Intolerance 9

DAO deficiency can be caused by:

Medications
Inflammation caused by autoimmune disease such as Crohn’s, ulcerative colitis, IBS.
Foods that inhibit histamine break down by blocking the DAO enzyme. Some of these foods include: alcohol, energy drinks, black tea, green tea, and mate tea
SIBO
Leaky Gut
NSAIDs (ibuprofen, aspirin)
Immune modulators (Enbrel, Humira,Plaquenil) (Meds that are often prescribed for patients with Eczema and Psoriasis)
Antidepressants (Prozac, Zoloft, etc.)
Antihistamines (allegra, Zyrtec, Benadryl)
Histamine (H2) blockers (Pepcid, Zantac,Tagmet)
Antiarrhythmics (propanolol, metaprolol, Cardizem, Norvasc)

**While it may seem that a histamine blocker would be beneficial, this type of medication ultimately drains the body’s DAO enzyme stores-ultimately leading to more histamine buildup.

Treating Histamine Intolerance

Identifying individual food sensitivities,Food Allergies, Eliminating all foods high in histamine for 4-6 weeks or longer depending on circumstances, is the best place to start. It’s also important to uncover why the intolerance is present in the first place; this is where functional medicine can truly make a difference. Perhaps the underlying cause is gut dysbiosis, SIBO, gluten intolerance, Hormones (Estrogen/Thyroid) Mold allergies, Mold Bio-toxins (CIRS), leaky gut, or a course of medication you’ve been taking.

Addressing the root cause of histamine intolerance, shifting the diet, improving gut microbiome, and replenishing DAO levels naturally help get the body back on track.

At DrHagmeyer.com, we strive to fully understand the needs and concerns of our patients and we will work closely with you to ensure your good health is restored. To help ensure your health is improved, we offer extensive testing and customized treatment programs as well as an overriding dedication to helping you get better.