Botanical Overview
Commonly known as Soybean, this species belongs to the Fabaceae family. Traditional healers across continents have independently recognized the medicinal value of this species, leading to one of the most extensive ethnobotanical records available. The legume family (Fabaceae) includes trees, shrubs, and herbs that produce pods (legumes) and form nitrogen-fixing root nodules through symbiosis with bacteria. The flowers are typically pea-shaped with five petals. This large family provides food staples, timber, and numerous medicinal species.
General Description
Soy is a staple crop, the world’s most grown legume, and an important animal feed.
Family Context
The Fabaceae family is large and globally distributed. Notable medicinal members include:
- Crab’s Eye — 73 documented uses
- Tamarind — 59 documented uses
- Common Indigo — 51 documented uses
- Fenugreek — 49 documented uses
Geographic Distribution
Soybean has been recorded in 10 countries and territories worldwide, including Afghanistan, Australia, Canada, China, Indonesia, and others.
Traditional Uses
Soybean has been traditionally used for digestive health, skin and wound care, and urinary tract health, among other applications.
Digestive health.
- Carminative
- Dysentery
For digestive complaints, the herb is typically prepared as a tea or decoction taken before meals. The bitter compounds stimulate digestive secretions and improve nutrient absorption. Some traditions use the powdered root or leaves in small doses as a stomachic tonic.
Skin and wound care.
- Burn
- Eczema
For skin conditions, the fresh or dried plant is applied topically as a poultice, wash, or compress. A strong decoction can be used to clean wounds and sores. The antimicrobial properties help prevent infection while promoting tissue repair.
Urinary tract health.
- Edema
Urinary tract applications typically involve drinking the herb as a mild tea, which increases urine production and helps flush the urinary system. It may be combined with other demulcent herbs to soothe irritated tissues.
Active Compounds
Phytochemical research has identified 30 compounds in this species, including a diverse array of phytochemical classes (see the Complete Chemical Inventory below for the full list).
The identified compounds include the following categories:
- Flavonoid: antioxidant compounds that protect cells from oxidative damage
- Phenolic: antioxidant compounds that neutralize free radicals