Black soybeans have been cultivated and eaten in Japan for over 1,000 years and they were used as a tribute to the Tokugawa shogun in the Edo period.

In Yakuzen, natural aging is related to kidney health which back color food is associated with. Yes, black soybeans are associated with kidney health as you can imagine.
They have the great property of improving urine flow which is one of the important kidney functions.
This action helps you reduce fluid retention such as edema and joint pains.
Also, they contain abundant antioxidants, protein, fiber, and minerals such as iron and potassium.

How do you eat them?
You can easily make homemade roasted black soybeans and enjoy them as snacks or make black soybean tea.

Nature – Neutral (平)
Channels – Spleen (脾), Kidney (腎), Large intestine (大腸)
Flavor – Sweet (甘)

How does black soybean help you?

1. Improves blood circulation and eliminates toxins.
2. Improves urine flow and relieves fluid retention.
3. Nourishes yin and blood.

Good for the following symptoms.

1. Edema
2. Joint pain due to fluid retention
3. Irregular period
4. Fatigue

Cautions

It's very important to know about your body conditions before choosing foods.
Do not eat too much of particular foods at once.
Do not eat the foods you are allergic to.
There are foods to avoid if you are pregnant / have a disease and also for children. Ask your doctor before you start Yakuzen food therapy.