In the dead of winter, going to a tanning salon really helps my SAD (seasonal affective disorder). That and eating alot of omega-3 rich foods have helped me get off of antidepressants.

My approach is moderation.

There is a topical cream for treatment of sun-related skin cancer. I have a tube of it around here somewhere for one of my horses that has squamous cell carcinoma. Got it at a human pharmacy and it was $250 per tube (at cost) for a neosporin-sized quantity. Now if I could locate it, I could tell you the name.