Anecdotes are not informative here. This is likely just confirmation bias. The periods during which one tends to eat a lot of fast food are also those during wh

Anecdotes are not informative here. This is likely just confirmation bias. The periods during which one tends to eat a lot of fast food are also those during which they have less time to prepare food themselves, often due to busy schedules or other stressful situations. Those likely contribute more to your mental state than having several cheeseburgers on successive nights. But we don't know, because, as the article says, nutrition epidemiology is notoriously difficult to the point of being impossibly useless.