One question that wasn't answered

It all comes down to hormones. Hormones control how much fat your body stores or burns. Insulin plays a huge role. It is the fat storage hormone. Skinny people are very sensitive to insulin and when they eat it only takes a small amount of insulin to clear blood sugar. Those people stay thin and have what people refer to as a "fast metabolism" while obese people are insulin resistant. Meaning they always have a lot of insulin in their blood which, which causes them to store body fat and they are the ones that have a "slow metabolism" The hormone leptin also plays a role in fat metabolism and appetite. Generally, obese people are also leptin resistant and skinny people are very sensitive to leptin. If you eant to learn more....read "why we gat fat" by Gary Taubes or "the leptin diet" by Byron Richards. and if you are fat....you should try a ketogenic diet. It does wonders for obese people. Read "keto clarity" by Jimmy Moore.

I think it also comes down to addictive personalities. They showed how sugar can be more addictive than coke, for instance, so for those who have addictive personalities they easily become addicted to sugar and therefor consume more of it than other people, leading to higher weight gain. I think this is the main issue with obesity: People's addiction to sugar. People don't gorge themselves on plates of wholefoods, it's generally sugar laden items.

They did address this, too, in the movie. They said even many thin people have a higher fat ratio than normal if you were to do a scan on them and are also pre-diabetic. It's scarier in a sense, because they wouldn't even necessarily know they were a candidate for it.

Babies are fed formula and other baby foods that are high in sugar.

Most of the time when it is said that people eat the same, the fact is that they do not eat the same. In most cases, if both parties write down EVERYTHING that goes into their mouth for a month, you will see the fatter person usually eats more.

I am a skinny person, and people have been telling me for my whole adult life, that I eat plenty and I eat all the time. This is not true.
Fat people always tell me that they have no idea why they are getting fat, as they don't eat. But this is not true. They always use ONE particular day as an example. "Look at today, I only had tea this morning, and it is now 2pm and I have not eaten anything as yet". :-) None of them remember the box of double fudge chocolate cookies they eat in the night after supper while watching TV.

When I eat bananas and mangoes for lunch, all the fat people at work look at me like I am crazy, and exclaim that that is not food!
But I eat things I get free in the back yard. I always try to put on weight, but sometimes when I eat too many free fruits for the week, I loose weight by mistake.

When we go the the mall, my fatter coworkers will spend about $30-$50TT on fast food, but I will save all my money instead. I will eat when I reach home, whatever mom cooked.

Also, in my country Trinidad, for the past decade, hospitals and health centers have been vilifying ripe fruits as the biggest problem when it comes to sugar intake, and they always warn people about eating too much raw fruits. So opposed to me, people eat sweet snacks instead of the dangerous fruits, and then they tell me that they don't know why they are getting fat and I get skinny, even though I eat so much more sugar then them.