Optimal diet to support endocrine function and testosterone levels: Start with protein. If you are engaging in heavy resistance training and regular exercise, a good rule of thumb is 1 gram of protein per pound body weight per day. Good sources include lean meats such as chicken, turkey, lean cuts of steak, eggs, and fish. I am also a fan of collagen protein shakes. Don’t go overboard on protein, and keep total caloric intake from protein under 35%. When caloric intake from protein exceeds 35% it has been shown to reduce testosterone levels. From here the % of fats and carbohydrates will be dependent on your carbohydrate sensitivity. If you are pre-diabetic, type 2 diabetic, or carb sensitive, it would make sense to limit carbohydrate intake to 10% or less. The limited carbohydrate intake should include nutrient dense fruits and vegetables such as spinach, kale, green leaf lettuce, blackberries, raspberries, and blueberries. If you are not carbohydrate sensitive, it might make sense to more evenly split carb and fat % intake to something like 35% intake carbs and 35% intake fats. In this case, I would still recommend consuming the previously listed fruits and vegetables, as well as adding more complex carbohydrate sources such as sweet potato, oatmeal, and quinoa. That leaves us with fat. Again, if you are not carbohydrate sensitive, % fat intake will likely be around 30-35 % of the caloric intake. If you are carbohydrate sensitive, fat intake will be a much higher percentage of anywhere from 55-75%. Consuming omega-3 fatty acids from sources like fatty fish is important. Other healthy fats include olive oil, avocado, eggs, and nuts such as pistachios or walnuts. A quick example, a 200 pound man who exercises regularly and needs 3000 calories per day to maintain weight would have a protein intake of 200g/day which equates to about 27% calories from protein. If he is not carb sensitive the remaining calories could be split evenly between carbohydrates, about 36% or 275g/day, and fat, about 36% or 122g/day. (at Brickhouse Barbell) https://www.instagram.com/p/CohWPuDulBj/?igshid=NGJjMDIxMWI=