This is no surprise to me since the UV here is actually sunlight related. Lots of co-conditions that affect it too. The paper said they adjusted their numbers for socioeconomic factors but still probably that adjustment won't be perfect.
Anyway, from all I have learned and done, the best health advice that I think applies to most people is moderation is the best. Trying too much and too hard on something will just backfire. Eating only meat and milk will cause cancer sure, but eating only vegetables and beans will also affect your health, namely nutritional deficiency. Etc. and etc.
I will just live normally while adjust things within limits and enjoy life while it is still good.