Japan (iodine-rich diet)

Japan's iodine-rich diet primarily includes seaweed, seafood, and fish, which are abundant sources of iodine—a vital nutrient for thyroid function. Iodine helps regulate metabolism, growth, and development by supporting hormone production. Traditional Japanese cuisine incorporates these foods regularly, leading to higher iodine intake compared to many other countries. This dietary pattern has contributed to a generally healthy thyroid function in the population. However, excessive iodine consumption can cause thyroid problems, so balance is important. Overall, Japan's diet exemplifies how incorporating natural, iodine-rich foods can support endocrine health effectively.