Steroid use can have a number of serious and potentially life-threatening side effects, particularly if used in high doses or for extended periods of time. Some of the dangers of steroid use include:

1. Liver damage: Steroids are processed by the liver, and long-term use can cause liver damage or even liver cancer.

2. Cardiovascular problems: Steroids can cause an increase in blood pressure, which can lead to heart attacks, strokes, and other cardiovascular problems.

3. Hormone imbalances: Steroids can disrupt the balance of hormones in the body, leading to infertility, impotence, and other sexual dysfunction.

4. Mood disorders: Steroids can cause psychological side effects, including mood swings, depression, and aggression.

5. Acne and other skin conditions: Steroids can cause or exacerbate acne and other skin conditions.

6. Infections: Steroids can weaken the immune system, making users more susceptible to infections.

7. Tendon and ligament damage: Steroids can weaken tendons and ligaments, increasing the risk of injury.

8. Stunted growth: Steroids can interfere with normal growth and development, particularly in adolescents.

It’s important to note that some of these side effects can be permanent, even after steroid use is stopped. It’s always best to consult with a healthcare professional before using steroids or other performance-enhancing drugs.