Some medicinal herbs contain hormone-affecting compounds that mimic the conditions associated with pregnancy and lactation. In theory, hormone-altering herbs may help increase breast size with fewer side effects and lower costs than cosmetic surgery. Experts such as Mayo Clinic's Dr. Sandhya Pruthi note that there is insufficient evidence to recommend herbal breast enhancers. Some estrogenic herbs may increase a woman's risk of developing breast cancer. Other serious side effects are also possible. Consult your health-care provider before using any medicinal herb.
Licorice
According to the National Institutes of Health, licorice supplements can increase levels of the hormones estrogen and prolactin, both of which can increase breast size. However, licorice has been linked to several potentially serious side effects, including electrolyte imbalances and heart problems.
Fennel
Fennel, traditionally used as a women's tonic, owes its licorice-like flavor to anethole, an estrogen-affecting compound found in both plants. In 1980, the Journal of Ethnopharmacology reported that fennel's estrogenic effects may relate to two other compounds--dianethole and photoanethole. Historically, fennel was viewed as a breast enhancer, aphrodisiac and breast milk stimulant.
Fenugreek
Like fennel, fenugreek has a long-standing history of use as a galactogogue, or breast milk enhancer. This fragrant herb has been used for centuries to increase the flow of blood and nutrients to the breasts. However, the National Center for Complementary and Alternative Medicine notes that this use remains unproven.
Alfalfa
Another traditional breast enhancer, alfalfa contains a high concentration of estrogen-like compounds. The National Institutes of Health notes that alfalfa's hormonal effects may interact with certain drugs, including hormone replacement therapy and oral contraceptives.
Member Comments