I think sometimes some of the suggestions that you read about are way too over the top. I havent heard of scrubbing fruit and veg with detergent.. i personally wouldnt do it, would make it taste like soap! I'd just wash it with water.

I wasnt super fussy about what I ate - if it looked and smelled ok, I usually ate it except for:
*sandwiches with meat in them - you dont know how fresh it is and how long its been there. I did make them myself a few times, but I didnt eat them that often.
*I dont eat seafood or sushi, so those things were easy to avoid.
*food from buffets which had been out and not heated/refrigerated for ages. which basically meant i only ate bread and fruit at my work Xmas party, because everything else was cheeses and meats and it was a hot day and nothing had been refrigerated for a few hours before we ate it.