Homocysteine

Anabolic/androgenic steroids may elevate homocysteine levels. Homocysteine is an intermediary amino acid produced as a byproduct of methionine metabolism. High levels of homocysteine have been linked to elevations in the risk for cardiovascular disease. It is believed to play a direct role in the disease, increasing oxidative stress, including the oxidation of LDL cholesterol, and accelerating atherosclerosis. Elevated levels of homocysteine may also induce vascular cell damage, support platelet aggregation, and increase the likelihood of thrombic event. The normal range for homocysteine levls in men aged 30 to 59 years is 6.3-11.2umol/L. For women of the same age the average is 4.5-7.9umol/L. Increased risk of heart attack, stroke, or other thrombic event are noted with even modest elevations in homocysteine. According to one study, a homocysteine level exceeding 15umol/L in patients with heart disease is associated with a 24.7% increased likelihood of death within five years.

Androgens stimulate elevations in homocysteine, and men have an approximately 25% higher level on average than women. Anabolic/androgenic steroid abuse has been associated with hyperhomocysteinaemia, or consistent clinically high homocysteine levels. One study found that the average homocysteine concentration in a group of 10 men that had been self-administering anabolic/androgenic steroids (in a cyclic pattern) for 20 years was 13.2 umol/L. Three of these men died of a heart attack during the investigation, and had homocysteine levels between 15umol/L and 18umol/L. The average homocysteine level in bodybuilders who had never taken steroids was 8.7umol/L, while it was 10.4umol/L in previous steroid users (3 months abstinence). One study did show that administering 200 mg of testosterone enanthate (with and without an aromatase inhibitor) for three weeks failed to produce a significant elevation in homocysteine. It is unknown if the moderate dosage, drug type (esterified injectable vs. c17-aa), or short duration of intake were factors in the differing outcome from other studies. Individuals remain warned of the potential for elevations in the homocysteine level with steroid abuse.

References

Wlliam Llewellyn (2011) - Anabolics

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