dr. michael holick says the number of people at risk is increasing, more people work indoors. and many of us are using excellent sunblock. >> ultraviolet light makes vitamin d in your skin. so if it absorbs 97% to 98%, that means it reduces your ability to make vitamin d by 97% to 98%. >> not enough vitamin d can lead to serious health problems, rickets or soft bones in children. osteoporosis in adults. it also can increase the risk of cancer and type 2 diabetes. >> and basically the list goes on. so every tissue and cell in your body is a vitamin d receptor. >> dr. holick and a team of researchers designed solar-d to be different, reducing some of the ingredients so people can still block the burn, but not the benefits. >> most of the ingredients are the same. it' s just that the ingredients have been changed in a clever way to take advantage of the ability for some of the ultraviolent light to make vitamin d in your skin. j.c.: the dr. expects to do cost just slightly more than what is on the market. ed: newscenter 5 at 6:00 starts right now. >> breaking news, the badly inju

dr. holick: most people on the planet are getting their vitamin d from sun exposure. so if you get no direct sun exposure, you're at extremely high risk for vitamin-d deficiency. heather: dr. michael holick says the number of people at risk is increasing. most work indoors, and many of us are using excellent sun dr. holick: ultraviolet light makes vitamin d in your skin. if it absorbs 97-98%, that means it reduces your ability to make vitamin d by 97-98%. heather: not enough vitamin d can lead to serious health problems-- rickets or soft bones in children; osteoporosis in adults. it can also increase the risk of developing breast cancer, colon cancer, and type 2 diabetes. dr. holick: basically the list goes on. so every tissue and cell in your body is a vitamin-d receptor. heather: dr. holick and a team of researchers designed solar-d to be different, reducing some of the ingredients so people can still block the burn but not the benefits. dr. holick: most of the ingredients are the same. it's just that the ingredients have been changed in a clever way to take advantage of the ability for some of the ultraviolet light to make vitamin d in your skin. doug: that was heather unruh re