Small gland - big impact. Unexplained weight gain, fatigue, exhaustion, depression, rapid heartbeat, or insomnia... it could be that a thyroid disorder is behind your complaints. Few organs in our body influence as many metabolic processes and bodily reactions. Get to the bottom of your issues and learn: - how the finely tuned regulatory system of thyroid hormones works, - what the other hormones in our body have to do with it, - whether menopause often brings about hypothyroidism, - how much iodine you need, - what types of disorders exist - and how they are treated.