Walnuts are a nutritious nut that may have many health benefits, including: 

Heart health

Walnuts are rich in omega-3 fatty acids, which may reduce inflammation and lower the risk of heart disease. 

Brain health

Walnuts contain antioxidants and polyphenols that may improve brain function and slow mental decline. 

Gut health

Walnuts are high in fiber, which may improve digestive health and reduce the risk of digestive diseases. 

Cancer prevention

Gut microbes may produce compounds from walnuts that may help lower the risk of certain cancers. 

Hair health

Walnuts are rich in biotin, omega-3 fatty acids, vitamins, and minerals that may stimulate hair growth and prevent hair loss. 

Sleep

Walnuts contain tryptophan, which the body uses to make serotonin and melatonin, which may help you sleep better. 

Other walnut benefits: 

May reduce the risk of depression and type 2 diabetes

May improve cognitive function

May lower bad cholesterol

May improve interneuronal signaling

May increase neurogenesis

May enhance sequestration of insoluble toxic protein aggregates

Walnuts are also a good source of vitamins and minerals, including calcium, iron, potassium, magnesium, and folate.