Wild Yam

Identity

Common Name

Wild Yam

Scientific Name

Dioscorea villosa

Botanical Family

Dioscoreaceae

Native Region

Eastern and central North America

Cultivation Regions

Eastern North America, Mexico, Central America

Plant Parts Used

Root (rhizome)

Synonyms

Colic Root, Rheumatism Root, American Yam

Caffeine Level

Caffeine Free

A climbing vine with heart-shaped pointed leaves in alternate arrangement and tiny greenish-yellow flowers, with a large knobby tuberous root — the part used and rich in diosgenin.

Historical Background

Wild yam has been used by Native American peoples and early Eclectic physicians for digestive and women's comfort, and its diosgenin later became the source material for the first oral contraceptives. Brewed as a root decoction, it remains a tradition-rich women's and digestive herb.

Earliest recorded uses: Native American and early American Eclectic medicine for centuries; a digestive and women's herb; source of diosgenin for early steroid synthesis.

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

Flavor & Aroma

Aroma: Earthy, starchy, slightly bitter

Tea Information

Research Summary

Wild yam has a tradition for digestive and women's comfort. The body does not convert diosgenin to progesterone (a marketing myth). Clinical evidence is insufficient and it is not a treatment for menopause, PMS, or any disease.

Evidence levels reflect the currently available scientific literature and may change as new research emerges. Where evidence is limited or conflicting, this is stated plainly.

References & Sources