No, it is not unhealthy unless you never left the house perhaps :), it is perfectly natural to masturbate.A man usually produces a mass of sperm and you only lose a small fraction of it masturbating.

The average human body loses gallons of water a year - many gallons. The human body also sheds a ton of skin cells over the life time. When it comes to sperm if you do not masturbate then you will ejaculate the sperm one way or another. Wet dreams are not uncommon, even in adult men. Their body "purges" semen while they sleep. Often old sperm cells are reabsorbed by the body or are flushed during the next urination. Seminal fluid is not purged in like manner, well not completely. Recent research confirms that men who do not ejaculate often are more prone to certain prostate and testes diseases, like cancer. Sperm are not valuable cells. Valuable cells are those that are not reproducible, like heart cell and brain cells - once you lose one of those or it dies - it is never replaced. Losing any cell other that a brain cell will NOT degrade your memory. Now if you lost enough red blood cells in a short period of time to slow or even stop the flow of oxygen to your brain that would kill brain cells, a real memory killer there. Still your losing a brain cell, not the blood cell, is the relationship to the memory. Masturbation is a healthy "normal" thing for a healthy "normal" human do to. Guilt and wives tales and "morality" have nothing to do with masturbation. The only time masturbation is a problem is if you do it excessively (like many times lets say 8 + times a day) or if you do that in the wrong places or wrong times. The this falls under the broader issues of sex addiction.

Yes and no. Only the loss of fluid is unhealthy. It is possible to develop self control so that you can not allow yourself to ejaculate at all when you have an orgasm. Orgasms and ejaculations are not the same thing, they are completely different and completely separate, but most guys just do not have the level of self control to have an orgasm and still maintain control ... usually they loose control as they orgasm and then they ejaculate. Tai Chi is not just bunch of slow moves ... there are many Taoist based lessons on how to be more aware of yourself and how to have a better and deeper set of self controls, right down to internal organs, glands, etc. There are many Taoist secrets of love that teach ways to enhance the pleasure ... try taking some Tai Chi lessons ... and have a look at this ... http://www.healing-tao.com/tao-garden/universal/en/books/ .

when u are urself saying that the body constantly reproduces new sperms...where do u think the old ones will go? if u don't masturbate there will be a sperm-overflow in ur system..:P

too much will not give your body enough time to produce more so it begins to hurt when you come but if you dont the sperm is not as fresh or healthy