Why not to eat soy with hypothyroidism?

People with hypothyroidism are often advised to limit soy intake because soy products contain isoflavones, which can interfere with thyroid hormone production and absorption. Additionally, soy may inhibit the enzyme responsible for converting the inactive thyroid hormone (T4) to its active form (T3). While moderate consumption may not have a significant impact for everyone, it's best for individuals with hypothyroidism to consult their healthcare provider about their soy intake.