I say as a slim, tall person that it is incredibly facile and dismissive to say that obese people have no self control. People's metabolisms work in different ways and at different rates, and people really have to work out best what works for them. For years it was all 'you must eat a healthy breakfast and lots of snacks' and now it seems to the lay person that evidence is building that skipping a meal, i.e. fasting through it might actually be healthier - FOR THEM.
I am slim but I have at least three super skinny friends that I have lived with/worked with/spent enough time with to know that they can eat whatever they want, whenever they want. Lucky them. I also have friends who have phenomenal self-control in many areas of their lives but who are overweight - it makes them miserable, they are always trying to change it and they seem to be fighting a losing battle.
I have put on weight a couple of times in my life - once after a long course of antibiotics, which seems to be coming up as not unique with all the new knowledge about micro biomes. The other was when I was pregnant and had a medical issue. Both times it was so difficult to control, it genuinely felt like a foreign force had taken me over, incredibly depressing and difficult. One time when I was breastfeeding I lost so much weight despite eating EVERYTHING in sight, the second I lost not a pound no matter how careful I was, but did not put on a pound no matter how much I ate.
There is lots on the internet about this story, this is prob not the greatest source but it's a good summary - faecal transplant makes woman obese. I think there is a lot of research into transplanting gut biome between lean and fat mice, it will be interesting to see in a few years' time what information if anything this shows up.
Our environment is clearly full of crap food and highly processed calories, but perhaps its easier for some people to avoid it/process it without immediately gaining weight.
Currently reading FAT CHANCE: THE BITTER TRUTH ABOUT SUGAR which is written by a doctor treating children with obesity. There seems to be a lot of science and research going into this area so I'm surprised at bio chemists saying there are no results about the effect that the type of food we eat has on things like visceral fat etc.
As he says, we are less judgmental about children, so perhaps talking about them makes us more caring and empathetic and keen to find a real solution to a huge global health problem rather than just saying 'Well, I'm alright jack, lovely and slim here, so you're clearly just a gluttonous old fatty with no self-control; why not get some' which is not just a) cruel but b) utterly pointless and doesn't seem to work!