There is a secret vitamin in neighborhood, wandering around your body under cover. This "vitamin" has just one single purpose, although some researchers believe he has ulterior motives. He goes by inconspicuous codename of "D" – Vitamin D.

Don't be fooled by his clever disguise. D is no vitamin. He's a steroid hormone, slipping through your body under guise of a vitamin. And he doesn't have dozens of functions, like vitamin C or vitamin E, just one vital mission – to mineralize your bones!

Mineralization is a key objective of every body. Imagine if we all had flabby bones. The world would look like a Salvador Dali nightmare. Vitamin D saves us from having flabby bones.

More importantly, vitamin D saves us from having brittle bones. He prevents us from rickets and osteomalacia by balancing calcium and phosphorous in our blood. Ooh, that D is a clever one. Not only is he a master of disguises, but he is a master chemist, constantly monitoring, measuring and balancing mix so it just right to ensure everybody has strong and healthy bones.

Word on grapevine is that 30% to 40% of hip fractures in elderly people are result of insufficient vitamin D. So we caught up with D, and managed to slip away with a rare interview transcript:

"D, some of your fans can't get enough of you. What should they do?"

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