““Reproductive hormones aren’t the only hormones that affect how you look and feel and think. Among the most influential are the hormones produced by your thyroid gland. Too little thyroid, and you feel like a slug. Hypothyroidism makes you feel like you just want to lie on the couch all day with a bag of chips. Everything works slower, including your heart, your bowels, and your brain. When we perform SPECT scans of people with hypothyroidism, we see decreased brain activity. Many other studies confirm that overall low brain function in hypothyroidism leads to depression, cognitive impairment, anxiety, and feelings of being in a mental fog. The thyroid gland drives the production of many neurotransmitters that run the brain, such as serotonin, dopamine, adrenaline, and noradrenaline. A””
