My god there are many people in this comment thread who trivialise weight loss, clearly having never done it themselves.

I'm a healthy weight, do heavy workouts 5 days a week and am in very good shape. When I cut my body fat down to ~10%, I go through hell in terms of hunger. There's not a minute I'm not thinking about how hungry I am, and how much I want to eat. I'm completely unable to do productive work, spending a majority of my mental energy restraining myself from getting food.

It's very clear to me, that the only difference between me and someone obese is at what point our brains start telling us that we're hungry.

The only purpose this article serves is to make people who have never struggled with diet feel superior.