Eat fewer vegetables
Yes, really—though only when it comes to cruciferous veggies, like cauliflower, broccoli, and Brussels sprouts. If these vegetables are a core part of your diet and you have thyroid issues, you may want to reconsider. A 2015 study published on PubMed found that, because they are harder for you to digest and metabolize than non-cruciferous vegetables, they have been linked to a higher risk of thyroid-related diseases.
Eat more seaweed
Your thyroid needs iodine to make its essential hormones. Seaweeds—like kelp, dulse, and nori—are packed full of iodine for your body to transform into hormones. They also usually contain a lot of other beneficial nutrients, like calcium, potassium, and Vitamins A through E, so the stuff is truly the super food you’re missing out on.