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Last Activity: what happens when you stop smoking It is amazing how science goes in circles. It is not a new discovery that Vitamin D is produced in our bodies in response to the sun helps us with calcium metabolism. Calcium in the right places and concentrations maintains bone strength, muscle contractions, secretions, neuronal activity, etc., etc., etc. Northern societies have eaten Vit D supplements as cod liver oil, or now as better tasting pills, when the sun got low on the horizon, and we even add Vit D to our milk. So, why all the excitement and hype right now? We've rediscovered the source of life ... the sun! harmful smoking effects xxx AM
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