Experts are not always right.
Experts told Columbus the world was flat. Experts told the Beatles that their sound wouldn't sell. Experts said that 256K memory was enough for everyone.
Now we have experts again spewing nonsense.

What nonsense? Experts say that we should avoid the sun. Lots of people have been concealing themselves from the sun's rays, and are slathering on the gooey mess known as sunscreen.
Researchers are telling us that skin cancer cases have increased 77% between 1992 and 2006, and they're still increasing by 4.2% annually. And this is after $billions are spent on sunscreen.
If the sun were really causing skin cancer, and if sunscreen prevented it, cancer wouldn't be increasing, it would be decreasing. Look around - only a few decades ago people were not so scared of the sun and spent far more time getting bathed in its rays - and skin cancer was practically unheard of.
Avoid sunscreen. Save your money and don't purchase this useless, dangerous product. Think of it like the flu shot - a dumb idea.
People with the highest levels of vitamin D have the lowest risk of skin cancer. Vitamin D is also correlated to less depression, a reduced likelihood of getting many different kinds of cancer, a healthier immune system and improved endocrine and hormone levels. And where has humanity traditionally gotten Vitamin D? From the sun, of course.

Sunscreen is dangerous. First of all sunscreen blocks the sun and prevents you from making vitamin D. In addition, putting on sunscreen gives you a false sense of security that you can stay out longer, increasing the chances you will burn.
Also, the ingredients in sunscreen have been linked to cancer, birth defects and sex problems. Where do you think that stuff goes when you put it on? It goes through your skin into your inner parts.
Enjoy the sun and get lots of vitamin D. You'll be healthier and happier. Just use some common sense and don't burn. Most people will simply get a nice tan after a few days - a sign that the sun loves you and you're getting a lot of what your body needs to be healthy.