Terminology Guide

Often referred to as 'male menopause,' it is a condition associated with the decrease in the male hormone testosterone. Unlike menopause in women, the decrease in testosterone and the development of symptoms is more gradual.

The use of hormones that are identical on a molecular level with endogenous hormones in hormone replacement therapy.

A person's weight in kilograms divided by the square of height in meters. A high BMI can indicate high body fatness.

A method of describing what the body is made of, differentiating between fat, protein, minerals, and body water to give a snapshot of health.

A steroid hormone that regulates a wide range of processes throughout the body, including metabolism and the immune response. It also has a very important role in helping the body respond to stress.

Dehydroepiandrosterone is a hormone produced by your body's adrenal glands. It functions as a precursor to male and female sex hormones, including testosterone and estrogen.

The inability to get or keep an erection firm enough to have sexual intercourse.

A chemical messenger system consisting of hormones, the group of glands of an organism that secrete those hormones directly into the circulatory system to regulate the function of distant target organs.

An estrogen steroid hormone and the major female sex hormone. It is involved in the regulation of the estrous and menstrual female reproductive cycles.

A hormone that helps control the menstrual cycle and stimulates the growth of eggs in the ovaries. In men, it helps control the production of sperm.

The testosterone in the body that is not attached to proteins and is freely available to be used by the body.

A hormone that plays multiple roles in human metabolism, including stimulating insulin secretion and suppressing appetite.

A physician-guided approach to evaluating and addressing hormone-related concerns. Decisions are based on laboratory testing, symptoms, and clinical evaluation rather than assumptions.

Medical treatment that may be considered when a physician confirms a hormone deficiency through laboratory testing, symptom evaluation, and medical history review. Treatment decisions are individualized and based on clinical findings — not assumed from symptoms alone.

A condition in which the male testes or the female ovaries produce little or no sex hormones.

A hormone that manages the effects of growth hormone (GH) in your body. Together, IGF-1 and GH promote normal growth of bones and tissues.

A condition in which cells in muscles, fat, and the liver don't respond well to insulin and can't easily take up glucose from the blood, leading to elevated blood sugar levels.

A person's overall sexual drive or desire for sexual activity.

A hormone produced by gonadotropic cells in the anterior pituitary gland. In men, it stimulates Leydig cells to produce testosterone.

A cluster of conditions that occur together, increasing your risk of heart disease, stroke, and type 2 diabetes.

A procedure using fine needles to create micro-channels in the skin or scalp, used in skin renewal and hair restoration contexts.

A proactive approach to health that focuses on preventing disease and maintaining wellness through regular screening, lifestyle, and early intervention.

An endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species.

A protein produced by both normal and malignant cells of the prostate gland. The PSA test is used to screen for prostate health.

A concentration of platelet-rich plasma protein derived from whole blood, centrifuged to remove red blood cells. Used to support healing and hair restoration.

The process of creating living, functional tissues to repair or replace tissue or organ function lost due to age, disease, damage, or congenital defects.

The degenerative loss of skeletal muscle mass, quality, and strength associated with aging.

A protein that binds to sex hormones (testosterone and estradiol) and carries them through the blood.

A non-invasive treatment that involves the delivery of acoustic waves to tissues. Also studied for certain vascular and musculoskeletal conditions.

An injection administered as a bolus into the subcutis, the layer of skin directly below the dermis and epidermis.

The primary male sex hormone. In men, testosterone plays a key role in the development of male reproductive tissues and promotes secondary sexual characteristics.

The thyroid gland produces hormones (T3 and T4) that regulate the body's metabolism, energy, and many other vital functions. TSH is the pituitary hormone that stimulates thyroid production.

A pituitary hormone that stimulates the thyroid gland to produce thyroxine (T4), and then triiodothyronine (T3) which stimulates the metabolism of almost every tissue in the body.

The total amount of testosterone in the blood, including both the testosterone attached to proteins and the free testosterone.

Body fat that is stored within the abdominal cavity and is therefore stored around a number of important internal organs such as the liver, pancreas and intestines.

A proactive approach to health that focuses on maximizing physical and mental performance, preventing disease, and extending healthspan.