Histamine intolerance and reheated dishes

Fresh food usually don´t contain histamine and other biogenic amines, those are primarily formed during the microbial decomposition of certain amino acids in the food. The degree to which a meal is contaminated with histamine mainly depends on the following questions:
  • Are there any histamine-producing bacterial strains present?
  • Is there appropriate substrate (in form of histidine) for histamine production?
  • How fast can the bacteria multiply?
  • Are some of the ingredients already pre-contaminated?
  • What is the activity of histamine-producing enzymes?

Histamine-producing germs thrive in warm environments, therefore proper handling and compliance with certain rules can help to minimize the build-up of histamine. In the following, we explain the backgrounds and tell you why reheated foods have the highest potential of histamine contamination.

Histamine intolerance reheated dishes


Food Intolerances – Updated version released for Android

After we released an updated version of our app Food Intolerances for the iPhone, it's now turn for the Android version. Learn more about the changes we made in the following post.

Android Blog eng 1Android Blog eng 2


What is the glycemic index of beer?

The glycemic index of beer is subject of a heated debate: The values you can find on various websites vary considerably. But what is the correct value? The answer is a lot more complex than you'd think.

Beer glycemic index

The role of fructose in the development of gout

Uric acid and its salts, known as urates, are an end-product of the metabolism that is excreted with the urine. Unfortunately, urates are poorly soluble in water. In contrast to other mammals, humans don't have enzymes to convert them into more soluble compounds. Therefore, the human uric acid level is very high in comparison – it is just below the physical solubility limit.


Possible causes for irritable bowel syndrome

Irritable bowel syndrome (IBS) is a chronic disease of the intestine that causes recurrent abdominal pain and discomfort. In the Western world 10–20 % of the population are affected.


What are FODMAPs?

The term FODMAP is an acronym, derived from "Fermentable, Oligo-, Di-, Mono-saccharides and Polyols". It is the generic term for certain kinds of short-chain carbohydrates that are poorly absorbed while they travel through the small intestine.

Onions FODMAPs

Nickel allergy

Nickel is a heavy metal that can be found all over the world in the soil or in the water. Approximately 10 % of all adults have a sensitivity to nickel and react with allergic contact dermatitis or digestive symptoms after exposure. Women are affected up to 14 times more often than men.

Earring Nickel

When does restricting your diet make sense?

If you suffer from food intolerances, certain constituents of the food may be responsible for a broad variety of symtoms. The obvious conclusion would be to cut all foods from the diet, that contain these constituents. However, such an avoidance strategy also carries risks.

restricted diet

Are sulfites dangerous?

Sulfites are used as preservatives, because they inhibit the discoloring and the spoilage of foods very effectively. They are generally regarded as safe, however, in isolated cases they may cause severe adverse reactions and several fatal incidents have been reported so far. There is a lot of confusion about potential health effects, therefore, we put together the latest information about sulfites.


Sugars – a small compendium

If you suffer from certain kinds of carbohydrate malabsorption you are often confronted with names of chemical compounds – it is often very easy to become confused. Therefore, we put together a small compendium that can be used, whenever needed.

Simple sugars

Glucose, a simple sugar; is the most important energy source in humans. It is readily absorbed in the small intestine. It is also known as grape sugar, corn sugar or dextrose.
Fructose FODMAPFructose
Fructose is a simple sugar that is slowly absorbed in the small intestine. The absorption rate is highest when equal amounts of glucose and fructose are present. When the amount of excess fructose is too high, fructose can reach the colon where it is fermented by bacteria.
Galactose is a simple sugar that occurs in foods like dairy products. In the small intestine, galactose is transported by the same carriers as glucose, therefore, the absorption is very fast.

How can vegetarians use the app Natural food guide to improve their omega-3 status?

The health benefits of omega-3 fatty acids can mainly be contributed to eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Unfortunately, those two fats almost exclusively occur in fatty sea fish and to a smaller degree in meat. So how can vegetarians meet their needs for these essential fats?


In principle, our body is able to produce these important fatty acids on its own from the omega-3 fatty acid α-linolenic acid (ALA), which serves as a precursor. Read More...

What is the average intake of omega-3 in different regions of the world?

A number of studies point out that the intake of the long-chained omega-3 fatty acids EPA and DHA in big parts of the population is too low. These fatty acids are very interesting because they play a decisive role in the prevention of cardiovascular disease. The World Health Organisation (WHO) recommends the combined intake of 500 mg/day of both fatty acids. However, it is not necessary to eat fish on a daily basis, it is also possible to meet the needs with one or two servings of fish per week.


To put this recommendation into perspective it is worth to take a look at the average intake of different regions of the world just to get an impression of the current situation.

Why is too much salt bad for our health?

The excessive ingestion of salt has been known to be a risk factor in the development of high blood pressure for decades. There is compelling evidence from a multitude of studies indicating a relation of high sodium intake, high blood pressure and the occurrence of cardiovascular disease. On the other hand low salt diets exhibit a blood pressure lowering effect. But what is the reason for this? Which factors cause the rise in blood pressure?


Scientists of the University of Otago in New Zealand decided to bring light into this issue. They argued that if a salt restricted diet lowers the high blood pressure of affected individuals, an increased salt intake should cause a rise of the blood pressure. Accompanying a low sodium diet 35 participants either received tomato juice rich or low in sodium for several weeks. Read More...

Do you know how much fructose you are eating?

From a historical point of view, fruits and honey were the only fructose-rich foods in our diet. In the 17th century the average sugar intake of each person was as low as 5 g per day. Big changes of dietary habits only occurred after the industrial scale production of sugar from sugar cane, sugar beets and the introduction of high-fructose corn syrup. Suddenly sugar was available in large quantities and at low costs.


Stay healthy: Get the best from your diet with the app FoodGuide

Which foods are rich in protein, but low in fat? Which fruits provide adequate amounts of vitamins? How do certain foods affect my blood sugar level? With the app FoodGuide for iPhone and iPad, it is now possible to take a closer look at the nutritional value of over 700 foods, allowing you to compensate for any natural nutrient imbalances.

Brief summary:
- An on-the-go practical nutritional guide
- Updated version 1.3: FoodGuide
- NEW: Glycemic index and glycemic load
- Nutritional information database for food
- Recommended daily intake of nutritives
- Search criteria for specific analyses
- Extra functions for vegetarians
- Links to wikipedia articles
- Shopping list and function for adding comments
- Supported languages: English, German, Dutch, Spanish
- Price: $2.99
- Link:

The app Food Intolerances, available on iOS and Android, helps you choose suitable foods

The issue of food intolerance has become an increasingly common topic of discussion in recent years. For those people afflicted, the app Food Intolerances is a practical and handy nutritional guide.

Brief summary:
- Universal app for iPhone, iPod touch, iPad and Android: Food Intolerances
- Updated versions for iOS and Android
- Designed for people suffering from food intolerance (histamine, fructose, sucrose, sorbitol, salicylates (Aspirin) or lactose)
- Evaluates more than 700 common foodstuffs
- Information about food additives and drugs (for histamine intolerance)
- Link:

FoodGuide for iPhone and iPad: The exact contents of foods revealed

Which fruit contains the most vitamin C, which vegetable is packed with iron? FoodGuide, the new universal app for iPhone and iPad, knows the nutritional value, vitamin, mineral and trace elements of the most important foods – and provides you with that information at the touch of a button. What really distinguishes this application is the comprehensive filter function that allows vegetarians to look through foodstuffs via their protein content, excluding those foods that contain fish, eggs and meat.

Brief summary:
- New app: FoodGuide - Vitamins, Minerals & Nutrients
- universal app for iPhone, iPod touch and iPad
- nutritional information database for food
- search criteria for specific analyses
- additional information for vegetarians
- links to wikipedia articles
- shopping lists and function for adding comments
- names of foods in various languages
- price: $2.99
- link:


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