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Case Study:  Over-masturbation hurts his middle-aged penis and let his penis go limp and ejaculate too fast, premature ejaculation, for no sexual orgasm.
Reader: 2/17/2011>

hello Dr. Lin, I have an erection problem. I masturbate quite a lot. this gave me staying power during intercourse and I was able to control my premature ejaculation. however, the overmasturbation has hurt my penis. I cannot maintain my erection during intercourse. I would be fully erect during missionary and doggy-style, but whenever I pull out or whenever she is on top, my penis shrinks and I can no longer have an erection. this is very frustrating. Did I damage my penis? Do I need VIP cream? Even now, it is getting worse. I cannot even masturbate anymore because my penis has no more feelings. It would be erect for a while, but the second I lose focus or stop thinking about something sexy, my penis deflates and I can no longer have an erection, even during masturbation. I do notice a slight discomfort on my top shaft. Please help me know what I can do. Also, I have sex 3 times a week, and they don't last that long each time.
Dr. Lin: 2/17/2011>
You got middle-age androgen deficiency. This is very common for middle-age men, particularly with a history of over-masturbation.

1. yes, You will  need ViaPal-hGH-P(3-010) and ArgiNOx (1-018), plus FishOil(1000 mg each meal) and Vitamin D 2000 IU,  to help you gradually rejuvenate your neuro-endocrine function and  boost your prostaglandin E-1/E-3 and Nitric Oxide production for healing.

Practice penile ballooning with VIP Cream.
but, understand the principle first -
What are the differences between the Penile Ballooning and Penile Exercises/Jelqing/Milking for penile enlargement?
Mechanism of the Penile Ballooning for a better sexual orgasm - on the the 2-stage penile erection theory for Penile Enlargement.
He said ' I enjoy using your products and I'll tell you that sex with them is better than sex without.... and my girl says she feels like im getting bigger inside her,..' for more sexual orgasm; on the principle of the Penile Ballooning for penile enlargement.
The role of DHT, prostaglandins E-1/E-2/E-3, and Nitric Oxide in the penile enlargement for more sexual orgasm