muscle hypertrophy

Muscle hypertrophy refers to the enlargement of an organ or body part, most commonly muscle tissue. This growth occurs when muscle fibers increase in size, often as a result of strength training. While muscle hypertrophy is typically harmless for those engaging in strength training, extreme cases can be associated with steroid use, which poses significant health risks.1

It is important to distinguish muscle hypertrophy from cardiac hypertrophy. While an enlarged heart might sound beneficial, cardiac hypertrophy is usually a negative indicator of underlying health issues. In response to long-term stress, such as hypertension, the heart can increase in mass through hypertrophy, providing more muscle to pump blood. However, this process involves complex cellular and molecular changes that affect the heart's performance.12