Why do some people always feel cold?
Body temperature is regulated in the brain by the hypothalamus, which signals the body to give off heat in warm conditions and trap heat (or shiver, generating heat in muscles) when it’s cold. Iron plays a role in this process, so people with anemia (commonly caused by iron deficiency) often feel chilly. Poor circulation—due to high blood pressure or medications, among other culprits—can leave the extremities deprived of heat. An underactive thyroid gland can also slow a person’s metabolism to a point where the body generates insufficient warmth. A recent study suggested there may even be a genetic predisposition to toward tolerance of cold. If you’re the type who needs to wear sweaters and wool socks in the summer, eat iron-rich foods like lean red meats, beans, and dark green leafy vegetables, which can counter anemia. And avoid nicotine, which constricts blood vessels and leads to poor circulation. 7. Is it true that your ears grow throughout life? Yes, the outer ears do. Starting a
