Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice. Masturbation
does not affect your health or sex life. In your age group it is a common practice. But excess is always poison.
Your weight is not reduced due to masturbation but there should be other reason for it. Take healthy vitamin rich diet. Avoid junk foods. Do some meditation
. Just divert your mind from sex thoughts by keeping yourself busy with other activity. This will reduce your addiction.
Hope I have answered your query. Let me know if I can assist you further.
Dr. Bimal Desai