There are several variants you should consider if you think about the erectile dysfunction prevetion:
You can use surgical treatment; however this can be both costly and dangerous. No one being an adequate person would throw away four thousand dollars just to obtain an injured organ and a life of regret.
Penis pumps are risky instruments even for those who wish to attain a bigger harder erection, not to mention attempting to increase the penis. To avoid damaging your penis check several times that you do everything right. Remember that you can obtain the problems for life. And in any case they are useless when it goes about penis size increase.
But penis extenders will. They are the safest way to get better erections and large penis you can find. Penis extenders force the conjunctive tissue making your penis body produce more cells, in this way helping you to get a longer and thicker penis in both states: flaccid and erect. However, don't expect penis extenders to deliver results overnight! They are incapable of such miracles as buying them today and getting a longer and stronger penis by the next morning.
You will have to spend time and invest considerable effort in achieving the desired result. But you will love it!