Nov
14
2020

Why We See More Food Allergies

By | Allergies

A recent review in a BBC article explained why we see more food allergies. It is important to note that one of the more important food allergies are peanut allergies. Certainly, they have risen from 1 in 250 children in 1997 to 1 in 70 children in 2008.

By all means, allergies come in various degrees of severity; an anaphylactic reaction is the most severe form. Notably, in England there was a rise of hospital admissions for anaphylaxis from 1,015 in 2013 to 1746 in 2019. This is a 72% increase in 6 years!

Theories why there may be more food allergies now

There are a number of theories why food allergies have been on the rise. There is a consensus now that the right composition of the gut bacteria is important for normal immune reactions to take place.

Hygiene theory

David Strachan proposed the hygiene theory of allergies in 1989. Briefly, his observation was that children of larger families were less likely to develop allergies. He interpreted this to mean that infections among siblings stabilized the immune system. In the meantime, it has become obvious that the gut plays an important role for the immune system.

Graham Rook’s “old friends” theory

Graham Rook’s “old friends” theory came out in 2003. This theory states that friendly microbes in the environment are mixing with the gut flora. This trains the immune system to balance.

Gut bacteria theory

There is good evidence that the more a child is given antibiotics as a child, the more likely it is that the person develops a food allergy later. The mechanism seems to go via the gut flora. In a way this is the other coin of Graham Rook’s “old friends” theory. If you kill the “good friends” bacteria in the gut by antibiotics, the immune system strikes back with allergic reactions.

Dual-allergen exposure

By exposing the child at 4 to 11 months to peanuts or peanut butter, the immune system develops tolerance to the peanut protein (LEAP=learning early about peanut). A study showed that by doing this 80% of 5-year and older children and adults do not have a peanut allergy.

Prenatal vitamin D and food allergies

A German study found that prenatal exposure to higher amounts of vitamin D resulted in a higher risk of developing food allergies before the age of two.

Use antibiotics only when necessary

Gut biome studies showed that the use of antibiotics can have long lasting effects on the composition of the gut flora. A patient in sepsis may require antibiotics. But when the patient has recovered it is important that the bowel flora is restored with probiotics. This balances the immune system and avoids allergic reactions.

Immunotherapy for food allergies

Allergists have long used desensitisation techniques to deal with inhalant allergies. Allergy shots every two or three weeks can be very helpful to suppress immune reactions to inhalants. The same technique works also for many food allergies. The allergist tests the patient’s skin on the forearm to see what positive reactions occur. Based on these findings an allergy serum is composed. A small amount is injected in intervals. The smallest amount is given first and the concentration is gradually increased until the maintenance dose is reached. This causes the immune system to produce competing antibodies that reduce the antibody-mediated reaction to the food allergies.

Why We See More Food Allergies

Why We See More Food Allergies

Conclusion

Food allergies are increasing in frequency and severity. There are several theories why food allergies develop. The most likely one is that friendly bacteria in the environment become part of the gut environment in the newborn. If we have the right composition of gut bacteria our immune system reacts normally. Administering antibiotics frequently and overcleaning our kitchens with too many cleaning agents affects our bowel flora negatively. This disbalance can cause allergic reactions. On the other hand, exposing a newborn between the age of 4 and 11 months to a variety of adult foods including peanut products will desensitize the child to peanut protein and prevent future allergies. Those who are severely affected by food allergies can see an allergist for allergy testing and consider desensitisation through allergy injections.

Dec
21
2019

Non-Alcoholic Fatty Liver Disease

By | Allergies, autoimmune disease, blood test, Diabetes, exercise, fiber, Inflammation, Nutrition, Obesity

Non-alcoholic fatty liver disease (NAFLD) has been increasing in the general population. About 25% of all Americans suffer from this condition. It is more common among obese, overweight and diabetic patients. But it is also very common in people whose gut bacteria are abnormal. Antibiotic residues in red meat and in poultry can cause these gut bacteria changes according to scientists. Metabolic products of these abnormal gut bacteria are absorbed in the gut and end up in the portal vein. This is a large vein collecting all the nutrients and leaked toxins and transports them to the liver. The liver detoxifies toxins and digests nutrients. In the process the liver can get inflamed and turn into a fatty liver.

Fatty liver is still reversible

When liver damage continues, fibrotic changes can develop and liver cirrhosis is the next stage of this disease. Fatty liver is still reversible, but liver cirrhosis is not.

The January 2020 edition of LifeExtension magazine contains a review of non-alcoholic fatty liver disease (NAFLD). It also tells you what you can do to normalize the condition. In the following I am reviewing this article.

Probiotics can help to reverse non-alcoholic fatty liver disease

Two studies that I will describe in more detail later showed that probiotics can reduce inflammation in the blood significantly and can reverse fatty liver disease. Abnormal bacteria in the gut can also lead to leaky membranes of the gut wall. This can become permanent and the condition has the name “leaky gut syndrome”. Researchers have linked this condition to the development of autoimmune diseases. People with obesity and with high blood sugars (people with diabetes) have the highest risk of developing non-alcoholic fatty liver disease (NAFLD). The condition (NAFLD) does not produce any symptoms. But a combination of blood tests and scans can diagnose the condition.

Good and bad gut bacteria

If you allow the bad gut bacteria to stay, inflammation of the gut wall with leaky gut syndrome develops. This allows bacteria, toxins and other substances that should stay out of the blood to enter the body. Researchers have found that good bacteria can control the gut inflammation by taking probiotics, that will allow the leaky gut wall to heal. They found the following bacteria to be beneficial:

  • Lactobacillus casei
  • Lactobacillus rhamnosus
  • Streptococcus thermophilus
  • Bifidobacterium breve
  • Lactobacillus acidophilus
  • Bifidobacterium longum
  • Lactobacillus bulgaricus

Probiotics usually contain most or all of these good bacteria. This allows the inflamed gut wall to heal and restore the gut barrier.

Two human trials

A  randomized, double-blind, placebo-controlled clinical trial was published in 2014. 52 patients with NAFLD who were overweight or obese were taking probiotics twice a day versus a placebo control group. After 28 weeks the experimental group showed normalized liver enzymes and a significantly reduced C-reactive protein. The C-reactive protein was reduced by 54% in comparison to the placebo group.

The other clinical trial consisted of 50 patients with NAFLD, but a normal or low body mass index. Half of the patients were taking probiotics, the other half placebo pills. The researchers noted that after 28 weeks the inflammatory markers were much lower in the experimental group than in the placebo group. Also, the liver values were now normal.

Discussion

Patients with non-alcoholic fatty liver disease are in danger of progressing to liver cirrhosis and liver failure. At this point only a liver transplant could rescue them from death. However, as the clinical trials have shown, the use of probiotics to normalize the gut bacteria can normalize the inflammation of the gut and reverse fatty liver disease. Regular exercise and weight loss through the use of a lower calorie diet will also help in normalizing the liver function. When prebiotics are added to probiotics the healing effect is amplified even further. Prebiotics contain fiber that cannot be digested, but which is useful for bacteria from the probiotics to multiply on.

Non-Alcoholic Fatty Liver Disease

Non-Alcoholic Fatty Liver Disease

Conclusion

We need to pay more attention to the food we are consuming. For instance, regular beef in the US contains antibiotic residues that permanently change the gut flora. This leads to an inflammatory reaction of the gut wall and leaky gut syndrome. Gut bacteria and toxic substances can now enter into the portal vein and reach the liver. The liver attempts to detoxify this, but in the process, it also develops non-alcoholic fatty liver disease (NAFLD). About 25% of Americans have this condition, which is asymptomatic. The only way to diagnose it is through blood tests and scans. Two clinical trials have documented that NAFLD can reverse back to normal with the consumption of probiotics. Regular exercise and weight loss (calorie-reduced diet) also help to reverse NAFLD back to normal liver tissue. It is obvious that a timely intervention is necessary to avoid the progression to liver cirrhosis!

Jan
02
2017

Gut Bacteria Can Protect Your Brain

By | Alzheimer’s disease, Autism, autoimmune disease, breast cancer, Cancer, Dementia, immune system, Infectious Disease, Inflammation, Nutrition, Obesity, organic food, Other neurological conditions, Parkinson’s disease, Prevention

The neurologist, Dr. David Perlmutter gave a keynote address where he pointed out that gut bacteria can protect your brain. The topic of his actual talk was “Rewrite your brain’s destiny” and the venue was the 24th Annual World Congress on Anti-Aging Medicine (Dec. 9-11, 2016) in Las Vegas. Many of the talks centered around the gut microbiome. Specifically, in this talk Dr. Perlmutter stressed the fact that the right mix of gut bacteria will protect your brain, while the wrong mix can make you sick. There were many slides, but too much information to mention all of details of the talk here. With this in mind, I will summarize the broad outline of Dr. Perlmutter’s presentation and certainly emphasize the practical implications this has for everyday life to prevent degenerative brain diseases.

A few facts

Did you know that the brain uses 25% of the body’s energy, but has only a 3% of the body’s weight?

There are trillions of gut bacteria

The gut flora has trillions of gut bacteria with its own DNA material. 99% of the DNA material in our body comes from the gut bacteria and the bacteria on our skin surface; only 1% of the entire DNA in the body is your own DNA. We are eating for 100 trillion bacteria, but it is important to remember that if they are good bacteria they provide us with important vitamins and they produce molecules that stimulate our immune system.

We need healthy gut bacteria

This means we better have bacteria in our guts that are friendly, not the bad bacteria that can cause us problems. An Italian study determined the gut flora of children in central Africa (Burkina Faso) and compared the gut flora to children from developed countries in Europe. There was a significant difference with the African children having a healthy microbiome in the gut and the children from developed Europe having unhealthy gut bacteria. This is important new information. Many other research papers have established that leaky gut syndrome and autoimmune diseases are linked to dysbiosis, which is the name for the unhealthy microbiome in the gut.

Chronic inflammation

Dr. Perlmutter showed several slides where literature was cited showing that chronic inflammation in the civilized world is increasing. He also showed that dysbiosis (unhealthy gut bacteria taking over) is also increasing. On several slides Dr. Perlmutter showed that in civilized countries like Iceland, Denmark, Germany, the US, Japan and others the bacterial diversity of the gut bacteria in people was vastly reduced compared to the diversity of gut bacteria of people in Kenya, Ethiopia, Nigeria or rural India.

Diminished gut bacterial diversity causes more Alzheimer’s disease

The same countries that have diminished gut bacterial diversity (dysbiosis) also have the highest prevalence of Alzheimer’s disease. On the other hand the same countries with diverse gut bacteria have a low incidence of Alzheimer’s disease. When infestation with parasites was examined there was also a parallel between increased parasitic stress and low Alzheimer’s disease rates, again in countries like Kenya, Ethiopia, Nigeria or rural India. The same countries where gut dysbiosis was present the parasitic infestation was low.

Further research has established that gut dysbiosis leads to an inflammatory condition of the gut where lipopolysaccharides (LPS) from gut bacteria are absorbed causing inflammatory reactions within the body.

Leaky gut syndrome causes neurological diseases

At the same time this leaky gut syndrome can cause obesity and leakage in the gut/brain barrier as indicated in this link. The result is neuroinflammation, cognitive impairment and vulnerability to develop Alzheimer’s disease. Our most dreaded brain diseases come from inflammation: Alzheimer’s, Parkinson’s disease, autism, multiple sclerosis etc. These are degenerative brain disorders due to chronic inflammation. If you eat a lot of red meat, sausages and processed foods your gut microbiome will undergo negative changes. If you eat healthy food with lots of vegetables, fruit and you cut out sugar and too many starches, you have a healthy microbiome, which develops a robust immune system. We have to rethink the gut/brain connection and learn how to prevent these chronic illnesses.

Obesity and gut dysbiosis

The link above showed that obesity has a connection to inflammation. It was also shown with MRI scans that the part in the brain, called hippocampus was shrivelled up (atrophied). This is a typical sign of dementia and Alzheimer’s disease. The investigators also confirmed with mental health functional tests that these patients had cognitive decline.

Another study also noticed that in a group of obese patients the hippocampus part of the brain was shriveled up the more obese people were. Obesity and dysbiosis of the gut flora are part of the same problem.

Practical application: the DASH diet and the Mediterranean diet are both healthy, balanced diets, strikingly different from the Standard American diet. In a study the hypothesis was tested whether the DASH diet and the Mediterranean diet would postpone dementia in a group of elderly patients. The answer was: yes, the hypothesis is true.

What does gut dysbiosis do?

It was shown in mice that chronic inflammation of the gut through ingestion of an irritant (dextran sodium sulfate) led to reduced new nerve growth in the hippocampus compared to control animals. It only took 29 days to show a marked difference between experimental and control animals in terms of reduced growth in the nerve cells of the hippocampus, the center of cognitive control.

The gut wall released inflammatory kinins, which were the negative mediators affecting the brain.

Antibiotic residue and Roundup in food causes gut dysbiosis

Antibiotic treatments and antibiotic residues in milk, milk products, meat, but also in all GMO foods are the irritants of the gut wall in humans. The antibiotics change the gut flora and lead to dysbiosis, which then causes gut wall inflammation and the cascade of events described above. The new finding is that GMO food contains RoundUp (they are “Roundup ready” crops). The herbicide Roundup was originally patented as an antibiotic and still leads to significant dysbiosis. Dr. Perlmutter urged the audience to buy organic food as the only method to reduce our exposure to Roundup. Roundup contributes to causing celiac disease and gluten intolerance in addition to exposure to the modern wheat (Clearfield wheat). The FDA is starting to do testing on foods for Roundup (glyphosate).

Roundup linked to cancer

If things are sounding bad for Roundup, it only gets worse: Roundup has now been linked to causing cancer. In medicine it usually takes some time before the effect becomes obvious is. The agriculture industry has embraced the use of Roundup; I suspect that denial will be the first line of defense. My first line of defense in turn is to stick to organic food.

To sum up: Roundup and the Standard American diet lead to dysbiosis in the gut, which causes leaky gut syndrome. This causes inflammation with the release of cytokines and LPS from the gut wall to the blood. These substances cross the blood/brain barrier and lead to inflammation in the brain. This affects the hippocampus with the classical sign of shrinkage.

Chronic inflammation and neurological disease

But Parkinson’s disease, multiple sclerosis, autism in children and Alzheimer’s disease in older people are all caused by chronic inflammation. There are three more brain-related diseases that are related to gut inflammation: stroke, depression and attention deficit hyperactivity disorder (ADHD). Dr. Perlmutter spent some time explaining that antibiotic overuse even leads to an increase of breast cancer as a Danish study has shown. Antibiotic use showed a linear increase of breast cancer as a result of increased antibiotic amounts used. The highest group had a twofold risk compared to a control group with no antibiotic use. Dr. Perlmutter interpreted this to indicate that chronic gut inflammation can even cause a disease like breast cancer.

What can we do to diversify our gut bacteria?

  1. Exercise: A recent study has shown that regular exercise is associated with a diversified gut flora. The reason seems to be the production of butyrate with exercise, which leads to a diversified gut flora. LPS levels (lipopolysaccharides from gut bacteria) are lower in people with a higher fitness score.
  2. Eat a DASH diet or the Mediterranean diet as indicated above.
  3. Avoid GMO foods because of the presence of Roundup, which functions like an antibiotic and leads to gut bacteria dysbiosis.
  4. Remember “Antibiotics are weapons of mass microbial destruction”. If you need to take them be careful that you rebuild your gut flora with probiotics. Use of antibiotics increases the risk of type-2 diabetes by 1.53-fold. It also causes a quadrupling of Alzheimer’s disease.
  5. A woman should consider natural childbirth whenever possible, as with a vaginal birth the child gets into contact with gut bacteria. Vaginally delivered children remain healthier than children delivered by Cesarean section for several years.
  6. Acid-suppressing medications and NSAIDs (anti-inflammatory medication for arthritis) can also lead to dysbiosis. Proton pump inhibitors increase the risk of Alzheimer’s disease by 44%.
  7. Prebiotic fiber can prevent Alzheimer’s. Probiotics do the same.
  8. Avoid sugar: even the Oompa Loompa knew that “If you eat sugar, you get fat”. Obesity and gut dysbiosis cause a higher risk of degenerative brain diseases.
  9. Take magnesium supplements (250 mg twice per day) and DHA from fish oil capsules. It stabilizes your brain metabolism.
  10. In severe, persistent cases of gut dysbiosis a fecal transplant can be considered by your gastroenterologist. This procedure takes place in more than 500 hospitals in the US.
Gut Bacteria Can Protect Your Brain

Gut Bacteria Can Protect Your Brain

Conclusion

The diversity of gut bacteria is immensely important. As discussed, in rural areas of the world there is gut bacteria diversity. In civilized parts of the world dysbiosis of the gut flora frequently occurs. This can lead to gut inflammation and the inflammation eventually becomes internal and can even reach the brain. These are the points to remember: exercise; avoid GMO foods, use prebiotics and probiotics. Avoid antibiotics; also avoid meat from animals that were fed antibiotics for faster growth. Don’t eat processed foods and avoid sugar. A healthy gut creates a healthy body, and this includes a healthy brain as well.

May
11
2013

Changes Of Gut Bacteria Can Cause Heart Attacks

By | Cancer, Health, heart attack, Heart Disease, Prevention, Stroke, Vitamins and supplements

The recent news of gut bacteria possibly being involved in causing heart attacks (see details below) sounds pretty outrageous. In order to make this more understandable, we need to start backtracking how bacteria end up in our gut and what they are doing there.

Gut bacteria in our bowels at various stages in life

Even among infants there is a huge difference in the composition of the gut flora depending on whether the baby was vaginally delivered, born by Cesarean section or prematurely born and nursed in an intensive care unit for a prolonged period of time.

When we are grown up, it depends on where we live on our planet as to what type of gut flora we have. A 2011 study of the bacterial composition of stool samples in Europe versus Africa showed that the European microbiome in the colon was typical of the Bacteroides enterotype, whereas the African microbiome was dominated by the Prevotella enterotype. Other studies have shown that the type of diet we eat causes us to harbor different types of gut flora. A person eating a more vegetarian diet will have a Prevotella enterotype gut flora, while another person eating a Western style fat and protein dominated diet will have a Bacteroides enterotype gut flora. What is the gut flora doing? It lives within our gut for our mutual benefit. We provide the gut bacteria a comfortable home at body temperature where they grow best. They in turn ferment undigested foods, protect us from the growth of harmful bacteria, produce vitamins like vitamin K and biotin, and produce hormones that direct the body to store excess food as fat.

Changes Of Gut Bacteria Can Cause Heart Attacks

Changes Of Gut Bacteria Can Cause Heart Attacks

Cleveland Clinic’s gut flora research linked to heart attacks

In April 2013 reports that heart attacks may be related to the composition of your gut flora hit the popular press, articles like this. Two years earlier, in April of 2011, the same Cleveland research group under Dr. Stanley Hazen found that the gut flora composition has an impact on heart disease. They stated that a “byproduct called trimethylamine N-oxide (TMAO) is produced when intestinal bacteria digest the nutrient phosphatidylcholine, commonly known as lecithin”. It was determined that the liver was responsible for producing TMAO out of absorbed materials from gut bacteria and that this was responsible for accelerating hardening of the arteries, which in turn caused deadly heart attacks and strokes.

As can be seen from this link the Cleveland research group is suggesting that TMAO could become a valuable screening tool when measured in patients’ blood to screen for their risk to develop a heart attack or stroke in the future. Furthermore, once these patients are identified, they can be sent to a dietitian and be put on a different diet that prevents heart attacks and strokes; also, the progress could again be monitored through repeat TMAO blood tests down the road.

Criticism of research from the Cleveland Clinic

Not every one has welcomed the study as clear-cut proof for a link between the gut flora and heart attacks, strokes and deaths. This link shows that it is questioned whether perhaps low antibiotic residues in red meat would explain the findings of the study. It rightly points out that there was no control for whether the more than 4000 patients were eating organic foods or a regular American diet. The comment goes on to say that the regular American diet contains residual antibiotics from milk, milk products, beef, chicken and turkey. These traces of antibiotics are powerful enough to have an effect on the gut flora, which likely is the reason for the differences between the vegetarian diet versus a Western style fat and protein dominated diet. It is entirely possible that grass fed beef would not lead to TMAO levels in the blood whereas regular beef or hamburger meat will raise the TMAO levels. The same could be true for egg consumption, which was also accused of raising TMAO levels. However, we do not know whether organic eggs that do not contain antibiotics would have done the same as regular eggs that contain traces of antibiotics.

Cancer caused by gut flora

This 2008 review article explains how lactobacillus and bifidobacteria (probiotics) prevent colon cancer, while bacteria of the Bacteroides and Clostridium variety increase the incidence of colon cancer and the growth rate of colonic tumors. So, the composition of your gut flora does not only matter with regard to prevention of heart attacks and strokes, but is also important in preventing colon cancer.

Change your gut flora to boost your health

Here is where the “rubber hits the road”. What I mean is that you can benefit from all of this research with regard to your health by paying attention to a few facts and possibly making a few changes as follows.

  1. I think that the argument of the bulletproofexec.com website holds true and we should all eat organic meats whenever possible. The Cleveland study has already shown that the gut flora in vegetarians stayed healthy even when they occasionally slipped and ate a regular steak.
  2. Take supplemental probiotics from the health food store. It will improve your gut flora within a day or two.
  3. Higher intake of fruit and vegetables make a measurable difference in the body decreasing the risk for heart attacks and strokes as this British research group has shown. Another research group from Italy has confirmed that an increased intake of fruit and vegetables mobilizes genetic switches that will stabilize the metabolism of the gut wall and prevent cancer of the colon.

So, the verdict for boosting your health is out: eat organic foods, use probiotics as supplements and eat more fruit and vegetables!

More information on nutrition: http://nethealthbook.com/health-nutrition-and-fitness/nutrition/

References

  1. http://www.nature.com/nm/journal/v19/n5/full/nm.3145.html
  2. http://www.ncbi.nlm.nih.gov/pubmed/23614584

Last edited Nov. 7, 2014