Competitive athletes focusing on enhancing their athletic performance often strive to improve their body composition by increasing lean body mass and decreasing fat mass 65,66,67. There appears to be an abundance of testosterone boosters that are marketed to the consumer. The best dietary sources of PS are organ meats such as brain, liver, heart, and kidney. PS is a phospholipid found in the cell membrane of a variety of tissues, including the brain, lungs, heart, liver, and skeletal muscle. Phosphatidylserine (PS) has also been proposed to enhance the anabolic response to exercise. Others have examined the capability of the element boron on its testosterone-boosting capability 55,56,57. Neves and colleagues identified several flavonoids as equal or better aromatase inhibitors in comparison to the anti-aromatase drug aminoglutethimide, including flavones, flavanones, resveratrol, and oleuropein.
This finding is particularly intriguing as it suggests that even though blood testosterone levels appear to decline after eating protein, this doesn't indicate an alarming downward spiral of testosterone production overall. Whereas some other studies have reported a significant immediate drop in testosterone levels. But recent research has shed new light on this matter - specifically that too much protein intake can actually lower testosterone levels by inducing an insulin-like Growth Factor (IGF) spike that leads to elevated levels of Sex Hormone Binding Globulin (SHBG). It could be a sign of underlying health problems or unhealthy lifestyle habits.In a large review, it was found that high doses of whey proteins (greater or equal than 20 grams/day), which is a key indicator of inflammation in the human body, significantly reduced C reactive protein (CRP). As such, many experts believe that the results of limited human studies on the effects of whey protein on blood pressure are inconclusive. Dietary protein supplementation before and after resistance exercise increases post-exercise protein synthesis as well as net muscle protein accumulation during recovery.
Kraemer and colleagues examined the effect of soy protein supplementation on the testosterone and estradiol response in healthy, resistance-trained men. Exercise and inadequate protein intake can result in a catabolic response of muscle. Dietary protein supports the replenishment of skeletal muscle protein as it is degraded or damaged by intense exercise 94,95. Skeletal muscle, the site for force production, is predominantly comprised of protein . The LFD had a small-to-moderate effect on decreasing total testosterone concentrations compared to the HFD. A recent systematic review investigated the effect of a LFD on testosterone concentrations in men . Results indicated that both groups experienced a significant increase from baseline in both total testosterone (TT) and FT concentrations during all four assessment times (weeks 2, 4, 6, and 8) of the study.
Bone, adipose tissue, and the brain are tissues in humans where the primary effect of testosterone is via aromatization to E2 4,12. Testosterone can also be converted to estradiol (E2) by the aromatase enzyme and then activate certain estrogen receptors. DHT binds to the same AR even more strongly than testosterone, so that its androgenic potency is about five times more potent than testosterone . The classical biological effects of androgens are primarily mediated by FT binding to the androgen receptor (AR).
However, anxiety has increased whether whey protein contributes to hair loss in both men and women. Testosterone isn’t just about muscle growth—it plays a role in mood, energy levels, and even bone density. Understanding this can help you make the most out of your whey protein intake and ensure you’re not overdoing it.
Protein provides essential amino acids that support muscle growth and repair, indirectly influencing testosterone levels. Beyond total protein intake, meal timing and distribution play an important role in hormone regulation. A multitude of factors influence testosterone levels, including age, genetics, lifestyle, exercise, and nutrition.
When testosterone binds to specific receptors in muscle cells, it stimulates protein synthesis, which is essential for muscle growth and repair. Therefore, many individuals, particularly those involved in fitness and bodybuilding, look for ways to boost their testosterone levels. Proper testosterone levels are essential for maintaining optimal physical performance and overall health.
Also, any supplements claiming to increase testosterone should only be taken on advice from a licensed healthcare professional. At its optimal levels, testosterone production occurs via brain signals sent via the pituitary gland. It’s generally safe to take whey protein with other supplements. You can also consume it as part of a meal to increase protein intake throughout the day.
Red clover flower extract, often used to improve hair and skin texture 33,34, has also been reported to inhibit 5-α-reductase activity . The effect of various food groups, macronutrients, and micronutrients on testosterone circulation and its proposed mechanisms. Figure 1 provides an overview of the effect that these various compounds have on aromatase activity. Extracts of many natural sources and nutrients, part of them used by traditional medicine, have been tested and found to possess aromatase inhibition activity. There are numerous natural substances that have been scientifically tested or suggested to inhibit aromatase activity, alongside pharmaceutical compounds whose non-medical use is considered illegal 2,6.