There are more holes in the ozone then ever before so that is why we need to take extra precautions to sunlight. However sun in moderation is fine. Vitamin D is vital to our immune sytem.  It is important to note that the sun is extremely stronger in tropical areas of the world. So when travelling make sure you take the proper precautions to avoid skin damaging. 

This article provides some valuable and interesting information on how, why and what sun damage does to our bodies. Do yourself and your family a favor and read the article carefully.