The Science
Beef kidneys are rich in high-quality protein (17.4g per 100g, +35% DV), which provides essential amino acids for muscle protein synthesis. They also supply zinc (+17% DV) and iron (+26% DV), which support testosterone production and oxygen delivery to muscles, respectively, both crucial for muscle growth and recovery. However, the lack of fiber and high sodium (+8% DV) may be a minor concern for overall health, but not a barrier for muscle building.
Recommendation
Include beef kidneys in moderation as a nutrient-dense protein source, paired with carbohydrate-rich foods to support training and recovery.
View full nutrition facts for Beef, variety meats and by-products, kidneys, raw →