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 Why do dermatologists and doctors always tell you to wear sunscreen? 
 Is this the beginning of a bad wordplay? 😁 
 Why did the dermatologist and doctor cross the road? 
 To avoid the eczema 
 Wondering why this dermatologist isn't a doctor. 
 Perhaps the Doctor has a PhD and isn't medical! 
 Because they are spineless sheep 
 Let's ask someone who has skin cancer ... 🤷🏻‍♂️ 
 I know that doctors' humor is not always the best, sorry... 🙋🏻‍♂️😅 
 Do not listen 
 Wrong answers only? 
 Because most people's skin is full of polysaturated fatty acids which cause inflammation when exposed to radiation.  Sunscreen is supposed to act as a barrier for our skin but popular sunscreens are full of seed oils (polysaturated fat) which are absorbed into the skin and make things even worse.  People also are inside most days and don't have a tolerance for long sun exposure so they are more likely to burn 
 Because they were taught so. And they were taught so because someone at the top wants your money, wants you to be constantly mildly sick and therefore attached to his institutions, and they want you to be able to work till retirement and then die soon after.
But sure enough, if you do not know how to behave with the sun, you may die from it a lot faster than from the sunscreen.
But you can be perfectly well in perfect health with the sun (on your skin directly without protection for some time), a lot better than with sunscreen, if you know how. 
 For money,  true there is no necessary protection ,it harmful this sunscreen 
 Solar flares 🤣

Legitimately one can use multiple things (coconut oil is one) to prevent sunburns which can lead to skin cancers … etc. 
 Sunscreens are complex question. I wish I’d kept a copy as not managed to find it again after but Sweden has few long term studies going where people have volunteered to track long term health. The skin cancer element was interesting. If I remember rightly it was tracking over 25 years. Prevalence of skin cancer from low to high (it’s been years so may have this slightly wrong. If anyone is successful in finding the study, feel free to refute, it was in a peer reviewed journal but cannot remember which either (yeah, am an idiot)):

1: people who never wore sunscreen and passed moderate amount of time in the sun
2: no sunscreen and very low sun exposure
3: sunscreen and moderate expose
4: no sunscreen high exposure 
5: always sunscreen and high exposure