Ok I'm 37 years old now and I tell associates all the time "when you hit age 30 years your body changes" of course this is not the case for everyone, but I usually say that when someone comments first about what changed about their body when they hit 30. I can tell you the day after my 30th b-day I had a backache like never before, my knees started to hurt. I wasn't in Kansas anymore Dorothy LOL.- Kitty
repost: http://www.leather-jackets-outlet.com/g/Hormones-and-Women-30-39/87.html 
Women Ages 30-39
Maintaining Hormone Balance
| We have found our mate, started a family, and hormonally-speaking are on  automatic pilot for the next fifteen plus years. Some of us have no  children, others have one or more and our hormones follow the changes  set by the presence or absence of pregnancy. While busy raising the  family Mother Nature wants our species to thrive and survive. This  simple fact translates in a fairly constant hormone balance with rare  glitches in the system. Our periods are fairly regular, we maintain our  weight, we sleep well and look young and are still full of energy.   Because it takes our offspring a minimum of 15 years to become  self-sustaining, our hormone balance and the state of our health has to  parallel this timeline. Scientifically, hormones will continue  protecting us for the 15 years we need to raise the children.  Emotionally and economically our society has extended the time our  children need our support. But even from that standpoint eventually our  children become self-sufficient. They do grow up. By the time they're  off to college, starting their own search for a mate, or beginning a  career, they leave behind not only an empty nest, but a hormonally  drained parent, who is now 40-50 years old. During our reproductive years, we are healthy. We stay healthy because the high levels of sex hormones we produce, protect us from illness. Even though most young people are healthy, statistically speaking, and wellness is the rule, the system is not perfect. Identifying the imperfections in our hormone balance that occur during our youth opens the door for us to protect ourselves from aging as we get older. Hormones do not protect us from ALL harm. Like a computer system, the human body does crash on occasion. The hormone balance gets thrown off even in the healthiest of people at the peak of their youth. When the hormone balance is off, we experience symptoms. Not every young woman will experience symptoms of hormone imbalance, but many women will at different times in their lives. Our ability to manage our own menopause, with its significant hormone deficiencies, requires an understanding of the concept that episodes of hormone imbalances occur regardless of age. 
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