I Was Reading On Line That A Lot Of Parents

I was reading on line that a lot of parents is having trouble with their children of all different ages 3-13 . Peeing in cups and consuming way to much food in one day . Most these parents say their child has ADHD and I am just wondering if it is normal because I have a 14 year old son that does the same thing. It's crazy because I thought just my son did this but many moms are saying their children are doing the same .