What is the difference between masturbation and sexual intercourse, and why is masturbation harmful while sexual intercourse is not?

Most of the effects resulting from masturbation are psychological, such as feelings of guilt, frustration, and loss of self-confidence. Its impact on the body comes indirectly through its effect on the psychological state.

He who cohabits with his wife feels psychological comfort and complete fulfillment of his instinct, unlike he who practices masturbation, who feels mental distraction and incomplete fulfillment of his instinct, which causes instability and psychological unease.

Excessive masturbation leads to a significant consumption of seminal fluid, which causes the body to lose a large amount of needed protein, resulting in weakness, emaciation, headaches, and a drop in blood circulation. Physical fitness, activity, and all other bodily capabilities are affected.

Studies have indicated that semen is the nourishment of the mind and bone marrow, and the essence of the veins, and that ejaculation is equivalent to the effort of running for kilometers.

The effects of masturbation disappear as soon as one stops it, and usually do not last more than two weeks.

It is advised to fear Allah, to safeguard the senses (especially sight), to direct one's thoughts towards useful matters, to set a goal in life, and to maintain prayers at their appointed times.