富硒富镁水果 对甲状腺有益

Core Viewpoint - Dietary adjustments are crucial for individuals with thyroid dysfunction, with selenium and magnesium-rich fruits providing essential nutritional support for thyroid health, but they should not replace medical treatment for thyroid diseases [1][2]. Group 1: Selenium-Rich Fruits - Selenium is a vital trace element and a key component of glutathione peroxidase, acting as an "antioxidant shield" for thyroid cells by effectively eliminating free radicals generated during hormone synthesis [1]. - Adequate selenium intake can help regulate immune responses and reduce inflammation in autoimmune thyroid diseases such as Hashimoto's thyroiditis [1]. - Common selenium-rich fruits include mulberries, jackfruit, and longan [1]. Group 2: Magnesium-Rich Fruits - Magnesium is essential for over 300 enzymatic reactions in the body and is crucial for maintaining normal thyroid function, acting as a cofactor in thyroid peroxidase and directly participating in hormone synthesis [1]. - Magnesium deficiency may affect thyroid hormone production and is associated with common symptoms of hypothyroidism, such as fatigue and muscle weakness [1]. - Common magnesium-rich fruits include bananas, avocados, blackberries, and kiwis [1]. Group 3: Dietary Recommendations - Selenium and magnesium-rich fruits should be part of a healthy, balanced diet rather than being viewed as "miracle cures" [2]. - It is recommended to consume fresh fruits directly, avoiding juices or dried fruits, with a daily intake of 200 to 350 grams [2]. - Patients with thyroid diseases should be cautious with high-sugar fruits like jackfruit, longan, and ripe bananas to prevent significant blood sugar fluctuations [2]. Group 4: Nutritional Sources and Guidelines - Fruits are not the primary source of selenium and magnesium; animal organs, seafood, and Brazil nuts have higher selenium content, while green leafy vegetables, nuts, and whole grains are better sources of dietary magnesium [2]. - The Chinese Nutrition Society recommends a daily selenium intake of 60 micrograms for adults, as excessive supplementation can pose risks [2]. - Processed foods, excessive alcohol, and caffeine can interfere with magnesium absorption [2].