Never, and here's why: being fat is not their fault. 99% of fat people DO NOT CHOOSE to be fat. It is NOT a combination of gluttony and sloth.
Most people who are reading this are eating the same thing that makes people fat and obese; it just hasn't happened to them YET.
Given time, everyone on the American diet will get fat, but good news! It will otherwise kill many long before they get fat.
Anyway, if you think that sugar, HFCS, honey, nectar, juice, molasses, maple syrup and white flour products (most sliced breads, crackers and pastas) are food, you can count yourself either fat , eventually fat of eventually dead of diabetes II, heart disease or hypothyroidism.
How's the acne? Bet you thought that was genetic and due to puberty.
Fructose makes you sick AND most often forces overeating. It prevents me hormone leptin from signaling the brain to stop eating.
Ergo not her/their fault.
"Sugar: the Bitter Truth " on YouTube
"Fat Chance..." by Dr. Robert Lustig M.D.