Using steroids can have several side-effects with the most dangerous one being that it can make you infertile! They can also damage your liver and kidneys, and in some cases cause a swelling in your brain. Additionally, steroids can also cause problems for your heart such as high blood pressure, enlargement of heart, high cholesterol, etc. The side effects don’t stop here – they can lead to the formation of acne or pimples, make you excessively aggressive and give you suicidal tendencies. Find out more about how steroids can even make people commit murders .