Hello dear, First of all remove all myths & misconceptions from your mind about masturbation. In fact, Masturbation is completely normal & doesn t have any bad effect to the body and mind. The causes of loose scrotum & dissimilar size of both testes can be: 1. Anatomical variation- there is normally a difference in the position of both the testicles, due to difference in the anatomy. 2. Varicocele- dilation of plexus of veins in the testis 3. Hydrocele- fluid accumulation in the testicular sac In your post you have not mentioned about any history of trauma & there is no testicular pain. Under such condition, investigation like Ultra Sound Scan of the scrotum will be helpful in detecting any problem in the structures present in that area, including any abnormality in the blood vessels (varicocele) or fluid accumulation (hydrocele) So, kindly meet an Urologist & get a proper physical examination done. Health can be improved by doing regular exercise and having a diet rich in fruits, vegetables, fish, nuts & honey. Avoid stress...practice meditation..this helps in improving concentration & builds up the confidence level. Avoid smoking & alcohol. Wishing you a good health. Take care. You can ask me a direct query on this website using the below link: http://www.healthcaremagic.com/doctors/dr-polash-sannigrahi/64925