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What is Androstenedione ?

Androstenedione is used to increase the production of the hormone testosterone to enhance athletic performance, increase energy, keep red blood cells healthy, enhance recovery and growth from exercise, and increase sexual desire and performance.

because of the ability of different parts of the body to convert it into the hormones, testosterone and oestrogen, which exert many effects on the body.

In females, the outer part of the adrenal glands (known as the cortex) and the ovaries release androstenedione into the bloodstream where it is converted to provide around half of all testosterone and almost all of the body’s oestrone, a form of oestrogen. Although the testes produce large amounts of androstenedione in males, they secrete little of this into the blood and, instead, rapidly convert it into testosterone within the testes. The adrenal glands also produce androstenedione in men, but this contribution is swamped by the testes’ overwhelming production of the other androgenic hormone, testosterone.

How is androstenedione controlled?

Due to its secretion from a number of different glands and its often rapid conversion to other hormones, the control of androstenedione within the body is very complex. However, two key parts of the brain (the hypothalamus and pituitary gland) are known to be important in the control of androstenedione secretion from the testes, ovaries and adrenal cortex.

The release of androstenedione by the adrenal cortex is thought to be related to the pituitary gland’s secretion of a specialised hormone, adrenocorticotropic hormone. Precisely how adrenocorticotropic hormone and other hormones control the adrenal gland’s production of androstenedione is, however, unclear.

The testes and ovaries are stimulated to release androstenedione by luteinising hormone and follicle stimulating hormone. These are released from the anterior pituitary gland in response to a hormone signal from the hypothalamus.

What happens if I have too much androstenedione?

The effects of too much androstenedione are likely to result from its conversion in the body to oestrogen or testosterone.

In men, too much androstenedione may lead to an imbalance in oestrogen and testosterone production, leading to changes such as breast development. Depending on the cause of the excess androstenedione, other changes, such as the testes becoming smaller, might also occur.

In women, excess body and facial hair growth (called hirsutism), stopping of periods (amenorrhoea), worsening acne and changes to the genitalia may result from too much androstenedione.

Although androstenedione is often abused by bodybuilders in an effort to build muscle bulk, a small number of studies have suggested that its long-term use may actually decrease muscle strength. The precise consequences of having too much androstenendione are, therefore, still unclear.

Benefit

• Increasing energy.
• Red blood cell health.
• Increasing sexual desire and function.
• Other conditions.

Dosage

Enhancing athletic performance. Taking androstenedione by mouth in doses of 100-300 mg per day does not significantly increase muscle strength, muscle size, or lean body mass when used for 2-3 months in connection with weight training.