Two factors vital to your attempts to build muscle and achieve the gains you want in the gym are protein intake and testosterone levels. Despite these working together to help you to build muscle, increasing your protein intake will not boost your testosterone levels. In fact, if you don't regularly perform resistance exercise, a high-protein diet might actually lead to a drop in your testosterone levels.
Protein Intake and Testosterone
According to a study published in 2008 in the "Journal of Applied Physiology," your testosterone levels tend to drop when you perform extreme exercise and burn more calories than you consume. Contrary to the researchers' expectations, eating a high-protein diet did not help to prevent this drop in testosterone. However, as long as you consume enough calories, regularly performing resistance exercise can actually help to boost your testosterone levels.
Preliminary findings from a study published in 2007 in the "Journal of the American Academy of Dermatology" indicate that eating a high-protein diet might actually lower your testosterone levels. This is because high-protein diets cause an increase in insulinlike growth factor, which can interfere with testosterone production. Although these findings are not conclusive, it seems unlikely that a high-protein diet can boost your testosterone levels.
- Journal of Applied Physiology: Effects of Dietary Protein Content on IGF-I, Testosterone, and Body Composition During 8 Days of Severe Energy Deficit and Arduous Physical Activity
- Sports Medicine: Testosterone Physiology in Resistance Exercise and Training: The Up-Stream Regulatory Elements
- Journal of the American Academy of Dermatology: The Effect of a High-Protein, Low Glycemic Load Diet Versus a Conventional, High Glycemic Load Diet on Biochemical Parameters Associated With Acne Vulgaris: A Randomized, Investigator-Masked, Controlled Trial