SUNSHINE: It's really good for you, and it prevents cancer

Here's a good example. Everyone knows that sunbathing is bad for you, and can cause the skin cancer malignant melanoma. Study after study has confirmed this, and even government agencies advise against exposing your skin to the sun. If by accident the rays should stroke your skin even for a moment, you must immediately put on a factor 50 sun-block.
But two new studies reveal that the sun can fight malignant melanoma and non-Hodgkin lymphoma.
Researchers at the Karolinska Institute in Sweden have discovered that the UV rays from the sun and sun lamps can reduce the risk of developing cancer - and especially non-Hodgkin's - by up to 40 per cent. In a separate study, researchers at the University of New Mexico found that people who had high exposure to the sun were less likely to die from skin melanoma. The key may be the health-giving benefits of vitamin D from the sun, which triggers the body's own immune system. Other studies have suggested that arthritis can be the result of sunlight starvation.