Beach season is here, and the great summertime tanning debate is heating up once again.

Is tanning really so bad for us? What's wrong with wanting to get a little color? And if we're too busy to sunbathe outdoors, what harm could a few sessions in a tanning salon do?

True or False? Indoor Tanning Doesn't Cause Melanoma False.

The indoor tanning industry contends otherwise, saying in some ads that the link is "hype" and not proven.

True or False?Outdoor Tanning Causes Skin Cancer True. The tanning industry's focus on melanoma only is misleading, says Fisher, noting that the link between non-melanoma skin cancer and UV exposure is solid.

Multiple studies have demonstrated a relationship between UV exposure and an increased risk of developing skin cancer, according to a report published in the May 2008 Journal of the American Academy of Dermatology, although the specifics of the association are different for melanoma and the non-melanoma skin cancers, squamous cell and basal cell.

True or False? You Need Sunlight to Get Enough Vitamin D False.No one's disputing that exposure to sunlight produces vitamin D, "the sunshine vitamin," or that vitamin D isn't important. A spate of recent studies has found that adequate levels of vitamin D may lead to improved heart health and protect from breast cancer, among other long-known benefits such as bone health.

True or False? Tanning Causes Premature Aging of the Skin True. Whether the exposure is indoors or outdoors, ultraviolet exposure over time causes what doctors call "photo aging," or wrinkles and a leathery look.

German researchers evaluated 59 people who voluntarily started to use sun beds over a three-month period. Use of the sun bed induced a DNA mutation in the skin known to be linked with photo aging, they report in the Journal of Investigative Dermatology.