Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Colostrum, the first form of milk produced by mammals immediately following delivery, is rich in immunoglobulins, growth factors, and nutrients. Its use as an athletic and exercise aid is primarily supported by scientific research rather than traditional medicinal practices. Human and animal studies have investigated bovine colostrum supplementation in athletes, focusing on benefits such as enhanced muscle recovery, improved immune function, and potential increases in lean body mass or exercise performance.

Several randomized controlled trials (RCTs) have found that colostrum supplementation (typically 10-60 grams per day) can reduce the incidence of upper respiratory tract infections in athletes undergoing intense training. Some evidence also suggests that colostrum may improve gut barrier function, which can be compromised during strenuous exercise. Additionally, a few studies have reported modest improvements in strength, endurance, and lean body mass, although these findings are not universal and some meta-analyses note inconsistent results.

The beneficial effects are thought to stem from colostrum’s high concentrations of growth factors (such as IGF-1), immunoglobulins, and other bioactive components that support tissue repair and immune modulation. However, methodological differences, variations in dosing, and small sample sizes in many studies limit the overall strength of the evidence. While there is moderate scientific support for colostrum’s role in supporting immune health and potentially aiding recovery in athletes, further large-scale, well-controlled trials are needed to confirm its efficacy and clarify optimal usage.

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