Being vitamin deficient ( never taking any vitamins) til now. could that have weakened my thyroid and caused me to have hypothyroidism?

Vitamins are in food: A person in the U.S. Who eats a balanced diet, has normal digestion, and exercises outdoors regularly, does not become vitamin-deficient even if she never buys any vitamin-supplements from the store. Some disorders can make a person deficient in certain vitamins over time, so doctors do check for certain conditions as needed. Not getting iodine from salt or foods, may lead to thyroid problems.