Walnuts may also improve sleep because they naturally contain melatonin, magnesium, and tryptophan, which are linked to relaxation and better sleep quality. In addition, they provide nutrients like folate, copper, manganese, phosphorus, and vitamin E that support energy production, bone health, and the immune system. Doctors recommend storing walnuts in airtight containers in the refrigerator or freezer because their healthy fats can spoil quickly and become rancid.
Despite the benefits, walnuts are not suitable for everyone. People with tree nut allergies can experience severe reactions, including anaphylaxis, and should avoid them completely. Eating large amounts may also cause bloating, gas, or digestive discomfort. Doctors also advise caution for people taking blood-thinning medications because omega-3 fatty acids may have a mild blood-thinning effect. Overall, walnuts are described as “a nutrient-rich option” that can improve health when eaten wisely and in moderation.
