No one knows precisely the ins/outs etc. of aging.  However, there are theories on how the body ages (at least forward ;) )<br/><br/><br/><br/><br/>I was simply pointing out that if one goes with a gland in the endocrine system, most likely the gland that would effect aging would be the pituitary gland.<br/>One theory is as follows:<br/><br/><br/><br/><br/><span class="bbc_font" style="font-family: inherit;"><span class="bbc_size" style="font-size: 22px;">The Hormone Theory of Aging</span><span class="bbc_size" style="font-size: 11px;">By [/color]Mark Stibich, Ph.D. (http://longevity.about.com/bio/Mark-Stibich-Ph-D-22600.htm), About.com Guide</span></span><span class="bbc_size" style="font-size: 11px;">[/color]Updated July 24, 2007</span><span class="bbc_size" style="font-size: 22px;">[/color]<br/></span><span class="bbc_size" style="font-size: 10px;">[/color]About.com Health's Disease and Condition content is reviewed by our <span class="bbc_u"></span>Medical Review Board 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The complex endocrine system of our body controls the hormones that regulate many body processes. As we age, these systems become less efficient, leading to changes in our bodies such as menopause. The hormone theory of aging believes that these changes eventually cause the effects of aging.<br/>The Evidence:<br/>There is some. Researchers removed the pituitary gland of mice. This gland controls much of the endocrine system. The researchers then gave the mice all of the hormones that are currently known to substitute for the absence of the pituitary gland. The mice without a pituitary gland lived longer than a control group of normal mice. Researchers concluded that the pituitary must also excrete another, unknown, hormone<br/><br/><br/><br/><br/><br/>that negatively impacts aging.<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>[/b][/size][/size][/font]