Problems like lack of erection, low sexual desire, and poor firmness of the penis are commonly related to erectile dysfunction. This can be caused by factors such as stress, anxiety, depression, diabetes, high blood pressure, hormonal imbalance, smoking, alcohol use, or side effects of certain medicines. Treatment depends on the cause and may include lifestyle changes (regular exercise, healthy diet, quitting smoking), stress management, counseling, and medicines prescribed by a doctor such as Sildenafil or Tadalafil. It is best to consult a doctor for proper evaluation and the most suitable treatment.