While some thyroid conditions are a function of genetics or a health condition, thyroid health can be ensured or enhanced in many ways. A body mass index (BMI) in the healthy range for both men and women, as well as moderate exercise, helps keep the thyroid healthy; those with a BMI over 40 are far more likely to have a slower-functioning thyroid. Proper amounts of iodine in the body are also necessary, as the thyroid can't produce hormones without it. Iron and zinc are also critical to the proper production of thyroid hormones. Finally, managing stress levels and balancing estrogen levels (in women) contribute to overall thyroid health.

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