how do i know if i have low testosterone

Low testosterone, also called "low T," can be identified by several signs and symptoms. Common indicators include persistent fatigue despite adequate sleep, loss of muscle mass and strength, decreased libido or sex drive, difficulty achieving or maintaining an erection (erectile dysfunction), and increased body fat. Other signs may include reduced beard and body hair growth, mood changes such as irritability or depression, hot flashes, smaller testicle size, hair loss, and problems with concentration or memory. A blood test measuring testosterone levels is needed to confirm low testosterone, typically defined as levels below 300 nanograms per deciliter (ng/dL) in men. If experiencing these symptoms, consulting a healthcare professional for evaluation and possible treatment options, such as testosterone replacement therapy, is advised.