A high-protein, low-carbohydrate diet (aka, the Atkins Diet) has long been touted as a way to lose weight, but there are some serious side effects associated with this dietary approach. One of them is its impact on testosterone. A high-protein diet can send your T tumbling down. Why? Because when you pump lots of protein into your body and bloodstream, it reduces the amount of testosterone that your testes produce.
Therefore, one way you can protect your testosterone levels can begin at every meal you eat. Be sure to enjoy 50 to 60 percent of your daily caloric intake as high-quality carbohydrates, such as whole grains, fruits and vegetables, and about 25 to 30 percent of calories as protein to keep your T levels up.
Read more about natural ways to increase testosterone here