Peanuts, though commonly thought of as nuts, are actually legumes. They originated in South America and eventually spread across the world through trade. It is believed that peanuts were introduced to Japan from China in the 17th century, where they gradually became part of everyday snacks and seasonal dishes. In Japan, peanuts are especially enjoyed in autumn, their natural harvest season.

From the perspective of Traditional Chinese Medicine (TCM), peanuts are valued for their ability to moisten dryness in the lungs, making them particularly beneficial during autumn when the air becomes cool and dry. This dryness can often lead to symptoms like a scratchy throat, dry cough, or rough skin, and peanuts help replenish fluids to ease these discomforts.

In addition, peanuts are considered helpful for nourishing and replenishing the blood. They have been used as a supportive food for those with anemia, dizziness from low iron. Their gentle, sweet flavor and neutral nature make them easy to include in daily meals.

Culturally, while roasted peanuts are the most common form found in shops, boiled peanuts are a delicacy worth trying if you have the chance. Boiling enhances their natural sweetness and softens the texture, offering a completely different taste experience compared to roasting.

At the same time, it’s important to keep in mind that peanuts are one of the most common allergens worldwide. People with peanut allergies should strictly avoid them, and even for those without allergies, moderation is key. Overeating peanuts—or any single food—can strain digestion and disrupt balance, which goes against the principles of Yakuzen.

Yakuzen Classifications
Nature – Neutral （平）
Channels – Lungs (肺), Spleen (脾)
Flavor – Sweet (甘)

How do peanuts help you?

1. Replenish blood
2. Strengthen the spleen and stomach
3. Moisten the lungs
4. Moisten the intestines

Good for the following symptoms

1. Dry cough
2. Chronic cough due to yin deficiency
3. Phlegm
4. Iron deficiency
5. Dizziness due to iron deficiency
6. Poor appetite
7. Constipation due to dryness

Cautions

It's very important to know about your body conditions before choosing foods.
Do not overeat 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. Ask your doctor before you start Yakuzen.