A high-protein diet can significantly reduce testosterone

A high-protein diet can significantly reduce testosterone - FITBOOK

Protein shakes, lean meats and co. are the main source of food? Warning: According to a new study, a high-protein diet can lower testosterone in men so much that there is a risk of loss of libido and infertility.

Bad news for pumping and fitness exercisers who have largely eliminated carbohydrates from their diet: According to a recent British study, followers of high-protein diets are at risk of losing the “manhood hormone” testosterone. According to the scientists involved, this leads to erectile dysfunction and low sperm count, among other things.

27 studies involving 309 men were analyzed

Men who are looking to gain muscle or lose weight are often encouraged to consume large amounts of lean meat, fish, and protein shakes. But according to researchers at the University of Worcester, there is a heavy price to pay for almost completely avoiding carbohydrates, according to a study published in the journal Nutrition and Health.1 The researchers collected data from 27 studies that included a total of 309 men.

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A high-protein diet lowers testosterone by up to 37 percent

They discovered that those who followed a strict high-protein diet — their diet made up of more than 35 percent protein — had up to 37 percent less testosterone than men who followed a balanced diet. Most people eat about 17 percent protein. Scientific research blog StudyFings, among others, cited lead researcher Joseph Whitaker as saying that high-protein diets that caused testosterone levels to drop above 35 percent, which is very high. “For the average man, there is nothing to worry about. But people who follow a high-protein diet should limit their protein to 25 percent or less.”

It is also interesting that a low-fat diet significantly reduces testosterone levels in men

Why low testosterone can be dangerous for men

A lack of testosterone increases the risk of heart disease, diabetes, and Alzheimer’s disease in men. An accompanying low sperm count can lead to infertility – along with loss of libido and erectile dysfunction. In general, if there is too little testosterone, men’s quality of life will be greatly affected. On the other hand, a healthy testosterone level ensures strength, muscle building, and athletic performance.

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Too much protein causes the release of stress hormones

Additionally, eating too much protein with not enough carbohydrates leads to higher cortisol levels. The study warned that the stress hormone suppresses the immune system and makes people more susceptible to infectious diseases, including Covid-19. “The finding that low-carb diets increase cortisol is very important right now,” Whitaker says. “These diets have become incredibly popular in recent years, being promoted by stars like Kim Kardashian and Megan Fox. It’s important to do more research in this area.”


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