Dietary struggles are primarily due to eating unhealthy foods known to be unhealthy, often stemming from calorie restriction leading to deprivation and overeating.

“so hundreds and hundreds of people i've had in-depth discussion with their struggles with diet and it is almost always eating horrible foods that they know they're not supposed to eat so overwhelming majority again i don't care about one exception to [ __ ] i don't care about the kid peeing in the pool i care about everyone else having a good time and so when it comes to diet the the vast majority of people are struggling against calories because they're trying to find low-calorie things they're unable to find low-calorie things that make them feel they want to feel so then once they've lost and they've given up and they felt like they failed now they're going and eating pints of ice cream and they had a backslide”