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Are there hormones in milk?

Toby Smithson
Nutrition & Dietetics

Hormones are present naturally in all milk, however these hormones have very little physiological significance since their concentration in cow's milk is very low in comparison to the level of hormones in the human body. Numerous studies have affirmed safety of hormones that may be present in dairy.

Mary Mullen
Nutrition & Dietetics
BST, which is short for “bovine somatotropin” (also called “bovine growth hormone” or BHG), is a protein in all cow’s milk and beef. It has no effect on humans -- like other proteins, it’s broken down during digestion.

Small quantities of BST naturally occur in cow’s milk. When given as a supplement in small, controlled doses, BST helps cows produce milk efficiently. The normal level of BST in milk itself doesn’t change with supplementation because the cow itself uses up the protein. In addition, there’s no change in the flavor or nutritional qualities of milk produced from supplemented cows. As always, milk remains an excellent source of calcium, protein, vitamins, and other nutrients.
Healthy Eating, Healthy Weight for Kids and Teens

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In a world of fast food, supersized sodas, and televised temptations, this guide shows how to buck the obesity trend currently in the national spotlight—and have fun doing it. Using a family...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.