steroid use on athletes

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Anabolic steroids are substances that increase muscle mass by enhancing the effect of male hormones in the human body. These work on testosterone and dihydrotestosterone to trigger increased muscle mass, fat loss, strength and aggression. At the same time, they can also enhance endurance, drive and determination – but they come at a price. Unfortunately, steroids are also highly dangerous and can cause a number of unwanted side effects and may even be lethal if the user is very unlucky. For these reasons, steroids are illegal in most countries and have been banned by most sports.