In the February 2020 online issue of the Journal of Urology, a study – "The Association Between Popular Diets and Serum Testosterone Among Men in the United States" – concluded that, “men adhering to low fat diets had lower serum testosterone levels, even when controlling for comorbidities, age, body mass index, and activity levels.” It was further noted that, “as differences in serum testosterone between the diets were modest, the avoidance of fat restrictive diets should be weighed aga...