Here's what the most recent research has to say about Hashimoto's disease

Hashimoto's disease, also known as chronic lymphocytic thyroiditis, is an autoimmune disorder that affects the thyroid gland. The thyroid is a butterfly-shaped gland located in the neck that produces hormones that help regulate the body's metabolism. In Hashimoto's disease, the immune system attacks the thyroid gland, causing inflammation and eventually leading to damage and destruction of the gland. This causes a decrease in the production of thyroid hormones, resulting in an underactive thyroid (hypothyroidism). Symptoms of Hashimoto's disease include fatigue, weight gain, cold intolerance, muscle weakness, constipation, dry skin, hair loss, and depression. In some cases, there may be no symptoms at all, and the disorder is only discovered during routine blood tests. Hashimoto's disease is usually diagnosed with a physical examination, blood tests to measure levels of thyroid hormones and thyroid-stimulating hormone (TSH), and sometimes an ultrasound of the thyroid gland. The main treatment for Hashimoto's disease is hormone replacement therapy with synthetic thyroid hormones. This will help to replace the hormones that the damaged thyroid gland is no longer producing. The therapy is usually lifelong, and the dose of hormones will need to be adjusted periodically based on the results of blood tests. Hashimoto's disease is a chronic condition, and there is no cure for it, but with proper treatment and management, most people with Hashimoto's can lead relatively normal lives.