Prostatitis at 15 years old may be caused by low immunity, unhealthy food, lack of hygiene, frequent masturbation and other factors. 1. Low immunity: People with low immunity also have poor resistance to infection by bacteria or viruses. Therefore, once they come into contact with pathogenic bacteria, such as Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, etc., they have a great chance to be infected, which will lead to prostatitis. 2. unhealthy food: for example, if you like to eat spicy and stimulating food, fried and greasy, barbecue and smoked food, and some like to drink carbonated drinks, these foods for the human body will produce a certain amount of stimulation, but also may induce prostatitis attack, the prostatitis, the prostatitis, the prostatitis, the prostatitis, the prostatitis, the prostatitis, the prostatitis, the prostatitis, the prostatitis, the prostatitis, and so on. 3. not pay attention to hygiene: if the 15-year-old boy usually do not pay attention to the urethra clean, may also lead to pathogenic bacteria with the urethra invasion of the prostate, so as to induce prostatitis. 4. frequent masturbation: if 15-year-old boys frequent masturbation, may lead to prostate congestion, can also cause prostatitis. It is recommended that 15-year-old patients with prostatitis should consult a doctor in time to take targeted treatment under the guidance of the doctor.