Dear service user, Masturbation in private or with a partner is generally considered a normal and healthy part of sexual enjoyment. Masturbation is not a disease hence no adverse effects. Masturbation causes impotency is a myth. It has nothing to do with testicle size. Masturbation is akin to sexual intercourse. What penis does in vagina during sexual intercourse, same it does during masturbation in your folded palm? This is a natural activity and I would say a healthy activity and does not either affect or deter sexual performance. Semen consistency varies. I understand your concerns regarding perceived change in consistency of semen. Consistency and amount of semen depends upon depends upon factors like period of sexual abstinence, age and intensity of sexual stimulation. Color, consistency and quantity have nothing to do with virility or sexual satisfaction of an individual. Neither do they have any relation to the partner s satisfaction. Have a balanced diet and regular sleep, exercise in your daily life. You are worried because of lack of required knowledge. I suggest psychological counseling. I hope this will help you. Warm regards and wish you good sex life ahead.