Conventional wisdom says "apply lots of suntan lotion and avoid the sun". I'm beginning to see reports that a number of suntan lotion brands don't work. I'm also seeing reports that suntan lotion may contain substances that are actually harmful to the body. Furthermore, new research is showing that people may not be getting enough sunshine.
For sure, too much sun can cause skin cancer. There is also evidence indicating a rise in tanning parlor use with an increase in skin cancers.