Hypothyroidism diet: Can certain foods increase thyroid function?

What is the best diet for someone with hypothyroidism?

- Monica / Kentucky

Answer

You don't need to follow a special diet if you have hypothyroidism as long as you take thyroid hormone replacement as directed by your doctor. Many Web sites promote hypothyroidism diets that supposedly increase thyroid function by adding or eliminating certain foods. But there is no evidence that these hypothyroidism diets work.

The important thing to remember about hypothyroidism and diet is that certain foods, supplements and medications can impair absorption of synthetic thyroid hormone. These include:

• Iron supplements or vitamin supplements containing iron
• Calcium supplements
• Soybean flour
• Aluminum hydroxide, a popular antacid
• Sucralfate, an ulcer medication
• Some cholesterol-lowering drugs, such as cholestyramine and colestipol

The best advice is to take synthetic thyroid hormone on an empty stomach and several hours before or after these particular foods, supplements and medications to avoid potential interactions.

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