Is there a relationship between hypothyroidism and polycystic ovary syndrome?

Hypothyroidism and polycystic ovary syndrome (PCOS) are generally unrelated.

PCOS is caused by excessive androgen secretion, whereas hypothyroidism primarily results from insufficient thyroid hormone production; thus, the two conditions are not directly related and represent distinct diseases. However, severely reduced thyroid hormone levels can impair ovarian ovulation. Similarly, PCOS is associated with immature or infrequent ovulation, thereby decreasing fertility. Although both disorders stem from endocrine dysfunction, they involve different endocrine glands and therefore require distinct therapeutic approaches.

Upon diagnosis of hypothyroidism, patients may, under physician guidance, take medications such as levothyroxine sodium tablets to alleviate symptoms. For PCOS, treatment should follow medical advice, potentially including medications such as tacrolimus capsules. During treatment, it is essential to adjust dietary habits—avoiding high-calorie, high-fat, and high-sugar foods—to prevent disease progression.