Low Libido in Men Causes: There was a time when men’s reproductive health was absolutely fine till the age of 50-60. Now the situation has completely changed. Nowadays, libido is decreasing rapidly even in young age boys. Libido is the desire to have sex, which is rapidly decreasing in men. Reasons like stress, hormonal imbalance, wrong lifestyle, lack of sleep and mental pressure can be responsible for reduced desire to have relationships in men. This problem can be controlled with timely doctor’s advice and improvement in lifestyle.