Can too much masturbation cause gynecomastia? I've heard from one side of people that believe its true and another side of people that claim it's indeed false, most likely a myth. I had gynecomastia and got rid of it over a year ago. I exercise regularly and eat pretty well. Recently, I have been home alone while everyone has been on vacation. I have masturbated for almost 5-6 days in a row and noticed very little come out today. My fear is I am taking a path towards having bigger breasts because of this. What is your opinion on masturbation being linked to gynecomastia?