“…And as many of the measures as they knew were reliable, such as oxygen consumption and the cholesterol level, and they would look at the palms of a person's hands. A low thyroid person can't convert carotene to vitamin A, and so they will typically accumulate orange in the calluses of their hands and feet, and their skin, their hands and feet are almost always cold because their metabolic rate is low. Even though their core temperature might be kept up by adrenaline and cortisol, their”