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Mass gainer


Also listed as: Weight gainer
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Theory / Evidence
  • Anabolic steroids: Scientific research suggests that aggression and other psychiatric side effects may result from abuse of anabolic steroids. Many users report feeling good about themselves while on anabolic steroids, but researchers report that extreme mood swings also can occur, including manic-like symptoms leading to violence. Depression is often seen when the drugs are stopped and may contribute to dependence on anabolic steroids. Researchers report also that users may suffer from paranoid jealousy, extreme irritability, delusions, and impaired judgment stemming from feelings of invincibility.
  • Andro supplements: Andro supplements claim to be converted into testosterone in the body to help improve muscle mass. However, in 2004, the U.S. Food and Drug Administration (FDA) declared andro supplements illegal, citing safety concerns. Andro acts like a steroid once it is metabolized by the body and therefore can pose similar kinds of health risks as steroids.
  • Other supplements: Creatine is used to provide energy to muscles, increase their volume and help prevent lactic-acid buildup. Some evidence suggests that taking HMB supplements might signal the body to slow down the destruction of muscle tissue. On this basis, HMB has been studied as a supplement for enhancing strength and muscle mass. However, larger studies are necessary to establish whether HMB has beneficial affects.


Author information
  • This information has been edited and peer-reviewed by contributors to the Natural Standard Research Collaboration (

  1. National Institute on Drug Abuse (NIDA). Infofacts: Steroids-Anabolic-Androgenic. 16 May 2006.
  2. Pope HG, Katz DL. Affective and psychotic symptoms associated with anabolic steroid use. American Journal of Psychiatry 145(4):487-490, 1988.
  3. U.S. Food and Drug Administration (FDA). 16 May 2006.

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The information in this monograph is intended for informational purposes only, and is meant to help users better understand health concerns. Information is based on review of scientific research data, historical practice patterns, and clinical experience. This information should not be interpreted as specific medical advice. Users should consult with a qualified healthcare provider for specific questions regarding therapies, diagnosis and/or health conditions, prior to making therapeutic decisions.

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