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Do Natural Breast Enlargement Pills Work? Are They Safe?


Updated June 25, 2014

  • Hops - Used in the brewing of beer, hops contain a potent phytoestrogen called 8-prenylnaringenin which has 0.2-20% the potency of estradiol, the main human estrogen.

    Hops are sedating and are used for anxiety and insomnia. They can cause excess drowsiness, so people who are driving or who otherwise need to stay alert should use it with caution. Hops should not be used by people with depression.

    Hops can affect the metabolism of prescription drugs in the liver, such as drugs for allergies, fungal infections, cancer, high cholesterol or oral contraceptives.

  • Pueraria mirifica - Also known as Kwao Krua, Pueraria mirifica is a plant found in Thailand and Burma and used by the indigenous hill tribe people.

    The plant contains compounds called miroestrol and deoxymiroestrol, which have been found to have estrogen-like effects in the body.

    Like the other herbs used for natural breast enhancement, pueraria mirifica should not be used by pregnant or nursing women, people with hormone-sensitive cancers, or by people using oral contraceptives as contraception.

    In one study examining pueraria mirifica in perimenopausal women, side effects included anemia.

  • Saw Palmetto - Saw palmetto (Serenoa repens) is a herb best known to treat urinary symptoms resulting from benign prostate hypertrophy (BPH) in men. It is thought to prevent the binding of the hormone dihydrotestosterone (DHT) to androgen receptors and to block the 5-alpha-reductase enzyme, which converts testosterone to the more potent DHT.

    We don't know why saw palmetto would work as a bust-enhancer. There is no scientific evidence linking DHT or testosterone levels from saw palmetto with breast enlargement.

    Saw palmetto should not be used by pregnant or nursing women or people with hormone dependent cancers.

    Saw palmetto has been found slow blood clotting, so it should not be used before or after surgery, but people with bleeding disorders, and by people taking "blood-thinnig"medications, such as Coumadin (warfarin), Plavix (clopidogrel), Ticlid (ticlopidine), Trental (pentoxifylline), heparin, and aspirin. Saw palmetto may decrease the effectiveness of oral contraceptives.

    More on Saw Palmetto.

  • Wild Yam - Wild yam has been found to have a variety of plant-derived estrogens, such as diosgenin. It is promoted to treat menopausal symptoms and relieve premenstrual syndrome (PMS).

    We don't know how wild yam could increase breast size. Diosgenin can be converted to estrogen and progesterone, but it must be done in a lab because the human body can't convert it on its own.

    One recent study did find that wild yam consumption altered estrogen levels. In the study, 24 postmenopausal women replaced their staple food with 390 g of yam in 2 of 3 meals per day for 30 days. After yam ingestion, there were significant increases in concentrations of estrone (26%), sex hormone binding globulin (SHBG) (9.5%), and a near significant increase in estradiol (27%).

    Wild yam should not be used by pregnant or nursing women, by women using oral contraceptives as contraception, or by people with hormone sensitive cancers.

    See Wild Yam - What You Need to Know.

  • Bovine Ovary Extract - There are no published studies of the safety or effectiveness of bovine ovary extract in humans. Unlike the other herbs discussed here, websites selling the product say that bovine ovary extract stimulates the pituitary gland resulting in an increase in prolactin and growth hormone levels.

    If this is true, there are potential risks. Prolactin is a hormone that rises almost ten-fold during pregnancy to stimulate breast development and milk formation. High levels of prolactin can cause infertility, irregular menstruation, reduced libido, and possibly increase the risk of stroke.

    Growth hormone is needed to stimulate growth in children. High levels of growth hormone in adults who don't need it can cause the development of diabetes, abnormal growth of bones and internal organs such as the heart, kidneys, and liver, high blood pressure, and atherosclerosis (hardening of the arteries).

    Bottom Line

    Although it may seem like there is no harm in trying natural breast enlargement pills for one or two months to see if they'll work, we know far too little about the side effects and safety of these "miracle" pills.


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