Many people assume walnuts nourish the brain merely based on the "like cures like" theory, yet scientific research has verified this benefit. Walnuts are rich in antioxidants and linolenic acid, which converts into DHA inside the human body, supporting brain development and slowing cognitive decline.
Health Benefits of Walnuts
1. Protect the heart and blood vessels
Loaded with antioxidants, walnuts sustain cardiac function and ward off heart disease. They contain unsaturated fatty acids that lower blood cholesterol and lipids, regulate blood sugar, and prevent arteriosclerosis and diabetes, unlike saturated fats. Raw walnuts also help reduce blood pressure.
2. Nourish the kidneys
Walnuts contain kidney-protective nutrients that ease symptoms caused by kidney deficiency, such as spermatorrhea, frequent urination, insomnia, and soreness of the waist and knees. They also boost libido and relieve low sexual desire.
3. Anti-aging effects
Walnuts are abundant in vitamin E, a well-documented medical antioxidant that fights aging and keeps people youthful. They also relieve stress and reduce risks of depression and Alzheimer’s disease.
Morning or Night: When to Eat Walnuts?
Despite multiple health benefits, timing matters greatly. Walnuts are high in oil; improper timing or overconsumption leads to weight gain.
The optimal time is after breakfast or roughly two hours following a meal. Mornings are when the body most needs energy, and calories consumed at breakfast will be burned off through daily activities. Eating walnuts with breakfast supplies nutrients without weight gain risks. Studies also show walnuts suppress appetite, reducing overeating at lunch.
Eating walnuts at night is inadvisable. Unburned excess calories will turn into fat during sleep. Physical activity drops sharply after dinner, slowing walnut digestion. Large evening portions may trigger excessive phlegm and internal heat, hindering nutrient absorption.
Recommended Daily Intake of Walnuts
Moderation is essential: 5 to 6 walnuts per day is ideal. People prone to internal heat or excessive phlegm should limit intake. Those with yin deficiency, frequent nosebleeds, or loose stools should eat few or no walnuts.