IMO the key to fried foods and sugar is moderation. Stay away from soda pop and fast food/processed food, period.
My grand dad lived to be 90. Growing up, his family ate every part of a pig except the oink. Late in life, my grandmother would boil collard greens and save the water. They called it “pot liquor”. He would pour it into mason jars and keep in the fridge. Before he went to bed he would down 3 fingers of whisky and a big swig of the pot liquor. He also smoked cigars from the age of 14. WW 1 veteran.
I joke with people that smoking and drinking killed him at the young age of 90.