Eggs are often discussed in the context of testosterone support due to their nutrient composition, particularly their rich content of cholesterol, protein, and essential vitamins such as vitamin D and B vitamins. Testosterone is synthesized from cholesterol, and dietary cholesterol intake has been linked, in some studies, to maintenance of normal testosterone levels. However, the relationship is complex and not fully established. Clinical studies have shown that moderate egg consumption does not adversely affect cholesterol profiles in most healthy individuals, and in some cases, diets including eggs have been associated with slightly increased testosterone levels, especially in athletes or those under caloric restriction.

Vitamin D, found in egg yolks, is also relevant, as deficiency in vitamin D has been associated with lower testosterone levels. However, the quantity present in eggs is modest compared to what is typically required for therapeutic effects. Additionally, eggs provide protein and healthy fats that support overall endocrine health, which may indirectly aid testosterone production.

Despite these links, robust clinical evidence directly connecting egg consumption with significant, consistent increases in testosterone in the general population is lacking. Most evidence is indirect, based on nutrient content and small-scale studies. Thus, while eggs can be considered supportive of healthy testosterone levels as part of a balanced diet, their effect is likely modest rather than profound.