1. Men's Health

Nicholas Rush, RDN, CDN

November 13, 2020

Soy and Man Boobs

Isoflavones are plant-derived compounds that have estrogen-like properties, and are found uniquely rich in soy foods. It would make sense that estrogen-like properties could cause some concern, but good new boys! Soy is not responsible for gynocamascia (aka man boobs).

In fact, these phytoestrogens found in soy have positive health benefits just for men! A diet high in soy intake is associated with about a 30% reduction in prostate cancer risk. Preliminary data suggest that the isoflavones may help to alleviate side effects in men undergoing radiation for treatment of prostate cancer. To further ease your concern, isoflavones have no effect on testosterone or estrogen levels in men.

Additional benefits of soy include reducing the risk of heart disease, enhanced endothelial function (aka blood vessels) and reduced arterial stiffness. Studies are also showing positive effects on bone health.

Gentleman, eat your soy worry free. Not just worry free but with joy and pride knowing you are providing positive health benefits to your body.

Though soy foods have no effect on thyroid function in people with normal thyroids, those who are on medications for low thyroid function should not consume soy foods 1 to 3 hours after taking thyroid medication. Contact your medical provider if you are on thyroid lowering medication and consuming or interested in consuming soy foods.

Chocolate Banana Peanut Butter Smoothie Recipe

Halcyon Health


  • Chocolate soy milk (1cup)
  • Banana (1 ripe)
  • Peanut butter (1 tablespoon)
  • Flax seed (1 teaspoon)
  • 4-6 ice cubes

Directions: Combine all ingredients in a blender or a food processor; blend until smooth

Nutrition Information: Servings side 1 smoothie, Calories 330; total fat 13g; Saturated fat 2.5g; Cholesterol 0mg; Sodium 180mg; Total Carbohydrate 44g; Dietary fiber 6g; Protein 15g