Walnuts are rich in omega 3 fatty acids that have been shown to help improve heart health. Fresh raw walnuts are rich in monounsaturated fatty acids (72%) such as amino acid 1-arginine and oleic acid. It also contains essential fatty acids (EFAs) such as linoleic acid, alpha-linolenic acid (ALA) and arachidonic acids. Including walnuts in any diet can help prevent coronary heart disease by promoting a healthy lipid supply. Walnut helps weight control by giving a feeling of satiety. Walnuts contain copper and phosphorus, both of which are essential for maintaining optimal bone health. Essential fatty acids found in walnuts secure the body's bone health. They can increase calcium absorption and accumulation while reducing urinary calcium excretion.

It contains omega-3 fatty acids that can help improve memory and focus. Together with omega-3 fatty acids, iodine and selenium, it enables the brain to function at an optimum level. Walnuts are also known to provide relief from cognitive disorders such as dementia and epilepsy. Walnut ranks second after blackberry in the list of "antioxidant-rich" foods. Rare powerful antioxidants such as quinone juglone, tannin tellimagrandin and flavonol morine found in walnuts have free radical scavenging power. These antioxidants also help prevent liver damage from chemicals.

Walnut, together with EFAs, provides minerals such as manganese, copper, potassium, calcium, iron, magnesium, zinc and selenium to the body. These minerals contribute to metabolic activities such as growth and development, sperm production, digestion, and nucleic acid synthesis.

Inflammation is at the root of many diseases, including heart disease, type 2 diabetes, Alzheimer's disease, and cancer, and can cause oxidative stress. The polyphenols in walnuts can help combat this oxidative stress and inflammation. A subgroup of polyphenols called ellagitannins may be specifically involved. The beneficial bacteria in your gut convert ellagitannins into compounds called urolithins that have been found to protect against inflammation. The amino acid arginine in ALA omega-3 oil, magnesium and walnuts can also reduce inflammation. Walnuts contain a compound called melatonin, which is responsible for transmitting messages about the light and dark cycle to the body. Since melatonin is already synthesized by the body, eating walnuts raises blood levels of melatonin and thus causes sleep. Therefore, eating walnuts can be a great way to improve sleep.

Eating walnuts improves sperm quality in healthy young men, researchers say. According to another study, eating 75 grams of walnuts a day increases the vitality, mobility and morphology of sperm in healthy men between the ages of 21 and 35. Walnuts are rich in B vitamins and antioxidants that prevent free radical damage to your skin and prevent wrinkles and signs of aging. Eating a handful of walnuts three times a week is the key to a longer life. Scientists have found that these edible seeds reduce the risk of dying from cancer by 40 percent and at least 55 percent from cardiovascular disease. Regular consumption of walnuts helps build a strong immune system that can prevent the emergence of various diseases.