Hardening of the arteries, also called atherosclerosis, occurs when fat, cholesterol, and other substances build up in the walls of arteries. These deposits are called plaques.efinition. Hardening of the arteries, also called atherosclerosis, occurs when fat, cholesterol, and other substances build up in the walls of arteries. These deposits are called plaques. Over time, these plaques can block the arteries and cause problems throughout the body.
CNS fatigue (CNS = central nervous system) is a slightly more convoluted phenomenon, but the term is thrown around frequently in the world of fitness. By itself, the acronym evokes notions of frailty, complication, and extreme caution.NS fatigue (CNS = central nervous system) is a slightly more convoluted phenomenon, but the term is thrown around frequently in the world of fitness. By itself, the acronym evokes notions of frailty, complication, and extreme caution.
Adrenal fatigue is the term most commonly used by patients, though the medical profession does not recognize it and it has no insurance billing code. When thyroid levels are low, the adrenals (a small gland above the kidneys) step in with cortisol and adrenaline to compensate for the deficiency. This can make someone feel both tired and wired at the same time. Sleeping problems are common. In Addisonâs disease, the adrenals produce little to no cortisol.