subject: Increase Your Penis Size Naturally Today [print this page] The important question is that can you possibly speed up the growth process? Fortunately, yes, you can. Diet has proved to be one of the major factors in causing the acceleration. Most of the men don't know that zinc and iron (both of them are growth hormones) works alongside with our body mechanism, and it eventually leads to natural increase in the size of your penis. Ample water intake also leads to considerable growth.