In general, all varieties of vegetarianism reject eating meat, which is essential to the diet. Among the many strands should be replaced owowegetarian who allow consumption of dairy products and birds' eggs and abandon products derived from the bodies of animals.
More radical are loktowegetarianie, eating only plant products, and milk and cheese.
The most restrictive sect of vegetarians are vegans rejecting all food of animal origin, including milk, and consume only fruits, vegetables and farinaceous products.
Beginning of the expansion of vegetarianism in the years the 60th century.
Originally it was connected with youth pacifist movements, which sought, among others. the humane treatment of animals.
Over time, many doctors and nutritionists found to be healthy vegetarian diet, it significantly reduced the consumption of fat.
Now, after about 40 years, virtually no doctor recommends as a healthy vegetarian diet because they are contrary to nature, and after some time of use must lead to some disorders.
Man as a predator can not nourish in a manner characteristic of the lower grades.
In nature there is so called. food chain that begins and ends with the plant being the last man of his cell.
It is significant that species on a certain level of the chain
may eat only those lying beneath them.
Herbivore (eg a cow) are not able to digest meat, and even predators can consume some plant products after heat treatment (eg dogs fed on rice).
A man applying at the top can use virtually all of the food chain.
There are also some features of the physiological and anatomical evidence of human adaptation to a particular model of nutrition.
Very easy to replace the structural features of the human body showing our
Mięsożerności (presence of tusks, a short digestive tract), but I will focus on lesser-known and obvious place in the metabolism of our body. One of the essential nutrients like protein is known.
Quality is assessed by comparing the protein content of essential amino acids (those which the body can not synthesize) in consumed foods containing these ingredients in foods to ensure good nutritional status. The more similar they are comparable to the values, the higher the quality of the protein.
Optimally know this from books by Dr. J. Kwasniewski, however, these two sentences are taken from the current textbook of biochemistry. The same textbook reads that the best protein found in eggs and meat.
The proteins in plants show some deficiency of essential amino acids, and that they need to fulfill the same time provide a different type of protein (the protein complement, or complementary) beans + wheat. In such cases, protein intake must be higher.
Excess amino acids are degraded and not stored. Which is produced when the ammonia is toxic to all animals.
In humans, it is converted into urea, which is less dangerous.
Meatless diets contain large amounts of sugars and particularly fructose, which the liver is almost entirely converted to triglycerides and the LDL-C levels.
In addition, it is detrimental to the inhibitory effect of excess sugar on the synthesis of ATP, which compound is the best energy carrier in the body.
Additional fructose is also responsible for the development of cataracts in the lens of the eye, especially in diabetic patients. Until recently they were all nutritionists agree that the beneficial effect of fiber on the gastrointestinal tract, which, through irritation, stimulates peristalsis. As is well known vegetable diets contain large amounts of his.
It is an important energy source in animals trawożernych, but in the human body practically can not be digested due to the different composition of the bacterial flora.
Currently, more and more often appear in professional literature reports of carcinogenic activity of fiber, which is not surprising, since the basic principle of oncology is that any irritants have such an effect.
In vegetarian diets major compounds absorbable from the gastrointestinal tract are glucose, fructose and galactose. The major route of combustion of glucose is called. Pentose phosphate pathway, which in humans and other primates show enzymatic deficiencies, and to work around them, it is necessary to provide vitamin C, which is not necessary in other mammals.
This indicates that there is a natural mechanism for generating energy for humans. Pets trawożerne also show another feature of the metabolism of food you eat, which never occurs in animals digesting meat products.
Each chemical compound (B, T or W) must first be converted into acetyl CoA, which in man arises from the so-called. pyruvate. In the case of ruminants, such pathways are not possible and therefore in their rumen ingest the products formed acetate, which is a direct source of acetyl CoA.
The facts presented clearly indicate that different mechanisms governing the metabolism of humans and animals with lower levels of the food chain.
The information contained in this document are readily available.
I profited from my favorite book that is, "Harper's Biochemistry" PZWL Medical Publisher 1998
(Pages 182, 219, 259, 264, 268, 275, 383, 778)
Lek. Przemyslaw Pala, MD
Optimal medical consultant.
