In the south we have an other way to deal with sun than people in the north.

And always the causes for a cancer are multifactorial. 
It's not just the sugar and potatoes.
And large exposure to sunlight in midday hours is bad for your skin, that's why you use sun cream. It's a fact 🔥
If you don't use it, it burns your skin, ask your mother, or even better...
Don't trust me, verify it 😜

And having your skin burnt should anything good for preventing cancer skin... but who knows!