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Washington: The researchers suggest that excessive protein intake for building muscle mass could have a negative impact on the body. However, it is best to keep a wide range of proteins to maintain balance.
Amino acids have long been praised by the fitness and bodybuilding communities for their muscle building benefits. From ultra-bulky protein powders to snack bars favoring lean mass, the products available are not lacking for those looking for muscle reinforcement.
However, the popularity of proteins also means that less attention has been paid to researching its potentially negative side effects. According to the study published in the Journal of Nature Metabolism, excessive consumption of branched-chain amino acids (BCAA) can reduce lifespan, negatively impact mood and lead to a weight gain.
BCAAs represent branched chain amino acids. It is a group of three essential amino acids: leucine, isoleucine and valine, which are found most often in red meat and dairy products. BCAAs are great for adding muscle mass, but science indicates that you could pay for it later.
The researchers investigated the complex role played by nutrition in mediating various aspects of metabolic health, reproduction, appetite, and aging. "Protein-rich, low-carbohydrate diets have been shown to be beneficial for reproductive function, but they have had adverse health effects at the end of life and have also reduced life expectancy," he said. explained Dr. Samantha Solon.
"What this new research has shown is that the balance in amino acids is important.It is best to vary the sources of protein to ensure you get the best balance of amino acids. " Current research has examined the effects of dietary BCAAs and other essential amino acids such as tryptophan on the health and body composition of mice.
"BCAAs supplementation has resulted in high levels of BCAAs in the blood, which compete with tryptophan for transport in the brain," explained one of the researchers, Professor Stephen Simpson.
"Tryptophan is the only precursor of the serotonin hormone, often referred to as" happiness chemical "for its effects on mood and its role in promoting sleep. But serotonin does more than that and poses the problem, "he added.
Dr. Rosilene Ribeiro, dietitian and public health nutritionist, recommends eating a wide range of proteins. It is important to vary the sources of protein in order to obtain a variety of essential amino acids as part of a healthy and balanced diet rich in fiber, vitamins and minerals.
BCAAs are essential amino acids found in foods containing protein, with red meat and dairy products being the richest sources. Chicken, fish and eggs are also nutritious sources of BCAA. Vegetarians can find BCAAs in bean, lentil, nut and soy protein.
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