There is no clear way to prevent hyperthyroidism but you can reduce your risk by doing the following:
Get your hormone levels checked all through pregnancy and 6 months after giving birth.
Control your diabetes.
Check your Vitamin B12 levels. People with pernicious anemia are at a higher risk.
Check your thyroid levels regularly if you have a family history or if you have had a thyroid problem or surgery in the past.
References:
NIH: National institute of Diabetes and Digestive Kidney…
