The effect of increased protein intake on life expectancy?
Many people take Protein and certain amino acids, in order to improve your muscle building the sports. Researchers investigated whether and how the increased consumption of Protein and BCAAs, the impact on life expectancy. The life expectancy will be reduced if people take a lot of Protein?
In a recent study by the University of Sydney, it was found that the excessive consumption of branched chain amino acids (BCAAs) reduce the service life, the mood of negative affect and lead to weight gain. The results of the study were published in the English journal “Nature Metabolism”.
What are BCAAs?
A long-term high protein intake and increased consumption of certain amino acids seem to lead to health problems. So-called BCAAs are essential amino acids, which are contained in protein-containing foods. Red meat and dairy products are especially rich in BCAAs. Also chicken, fish and eggs contain increased amounts of BCAAs. Vegetarians can obtain BCAAs, for example, from beans, lentils, nuts and soy. BCAAs are a group of three essential amino acids: leucine, isoleucine, and valine. Whey protein (Whey-Protein), the most common Form of Protein in the Fitness scene, is made from the by-products of dairy products and contains a high percentage of BCAAs.
Negative effects of amino acids
Amino acids have already been for a long time in Fitness and Bodybuilding circles for its muscle-building benefits estimated. From protein powders to lean-mass-enhancing Snack bars there are many such products. The side effects of the products has been paid in recent years however very little attention. The results of the current study suggest that the excessive consumption of branched chain amino acids (BCAAs) shorten the life of that mood, negative affect, and lead to increased weight gain. Was investigated, particularly the complex influence of nutrition on the metabolic health, reproduction, appetite and aging. During a diet has been proven with a high protein content and low in carbohydrates as a beneficial for the reproductive function, there was a negative impact on health in middle and late life, age and a shortened life span, says study author Dr. Samantha Solon-Biet, of the University of Sydney.
Balance of amino acid is very important
“This new research has shown that the amino acid balance is important. It is the vary best protein sources, so as to ensure that you get the best amino acid balance,“ advise the researchers in a press release from the University.
Rivalry between BCAAs and Tryptophan?
In the study, it was investigated how BCAAs from food and other essential amino acids, such as Tryptophan, have an impact on health and the body composition of mice. Supplementing the normal diet with BCAAs has led to high quantities of BCAA in the blood, which competed with Tryptophan for Transport into the brain, says Professor Stephen Simpson from the University of Sydney.
Tryptophan is the sole precursor for the hormone Serotonin, known for its mood-enhancing effect and its role in the promotion of sleep is known. But Serotonin has other implications, and there’s the Problem, Simpson adds.
They use a variety of sources of protein
As a result of the rivalry between the level of serotonin is reduced in the brain, which, in turn, was a powerful Signal to increase appetite. The high BCAA intake caused serotonin waste resulted in the mice to a massive Überaufnahme of food. This meant that the animals were severely obese and the life expectancy reduced. The mice in the study were divided into different groups, some of the group received double the amount of normal BCAAs (200 percent), another group received the Stan intestinal tight (100 per cent), one group received half the normal amount (50 percent), and the last group got only a fifth of the normal amount (20 percent).
The animals, which received double the amount of BCAA’s, had a significantly increased food intake, leading to obesity and a shortened lifespan. It is, therefore, to vary very important sources of protein through a healthy and balanced diet, rich in fiber, vitamins and minerals, a variety of food to obtain essential amino acids, so the conclusion of the researchers. (as)