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Walnuts (Juglans regia) are a tree nut belonging to the walnut family.

They originated in the Mediterranean region and Central Asia and have been part of the human diet for thousands of years.

These nuts are rich in omega-3 fats and contain higher amounts of antioxidants than most other foods. Eating walnuts may improve brain health and prevent heart disease and cancer

核桃（Juglans regia）是属于核桃科的树坚果。

它们起源于地中海地区和中亚，几千年来一直是人类饮食的一部分。

这些坚果富含 omega-3 脂肪，并且比大多数其他食物含有更多的抗氧化剂。吃核桃可以改善大脑健康，预防心脏病和癌症