The following graph depicts the evolution of the male reproductive hormone axis with age. In this graph, men are separated in three groups in accordance with their BMI.
Reproductive hormone axes in men with different BMI.
A Test of Physiological LIteracy:
1. Draw graphs for testosterone (T), free T, LH, FSH, SHBG and non-SHBG-bound T for the following groups:
1.1. Lean (BMI<25) sedentary men on a ketogenic diet.
1.2. Lean (BMI<25) endurance athletes on a low carbohydrate diet.
1.3. Lean (BMI<25) athletes who practice high-intensity sports (TABATA, rowing, etc.) and follow a low carbohydrate diet.
1.4. Lean (BMI<25) resistance exercise athletes on a low carb diet.
1.5. Lean (BMI<25) athletes on a carnivore diet.