People do suffer from masturbation and thats fact. You can find millions of experiences and testimonies on internet. I think they all are not lying .
People are called conservatives and tagged religious for forbidding masturbation but fact that it can bring health hazards. Its bad for health if over practiced and it is over practiced most of times.
Like not all smokers don't get Lungs cancer and all Alcohol drinkers don't get liver failure, similarly not all masturbaters get harmful side effects but its dangerous since lot of people do face side effects. I am telling it becoz i have seen plenty of people suffering and myself had very bad experience .
So best thing is to avoid this lusty habit which give you nothing but pleasure of few minutes but can take Joys of life... Some times forever..