Does staying Happy all the time keep us young and health?

Philippines
January 29, 2010 8:41am CST
For me, I have noticed a lot of people around me everyday who are happy and smiling all the time seems to look young for their age. I don't know really what is the exact reason behind this maybe there are certain chemicals and hormones in our body that play a big role in our body that keep us young and healthy. I don't know really if this is true or not, but i noticed it a lot from my College teachers men and women. What do you think?..............
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