6 Foods That Negatively Affect Your Thyroid – What to Avoid or Limit

Your thyroid may be small—about the size of a butterfly at the base of your neck—but it plays a huge role in your overall health.

It controls metabolism, energy levels, mood, weight, and hormonal balance.
When the thyroid gland isn’t functioning properly—whether it’s underactive (hypothyroidism) or overactive (hyperthyroidism)—every system in the body is affected.

While medication is essential for thyroid disorders, diet can help—or make things worse.

Certain foods can disrupt thyroid function, interfere with hormone production, or worsen symptoms.

Here are 6 foods that can negatively impact your thyroid—and what to do instead.