Obviously caloric surplus (eating more than you burn) is the proximate (immediate or obvious) cause of obesity. That's a no-brainer and its re-statement is fatuous. The deeper and vastly more important questions relate to hunger and metabolism. What controls appetite? What controls metabolism? What causes these things to get "out of whack" so that people become obese?
What I would like to do in the subpages that branch off from here is explore the various theories and hypotheses that are currently being discussed as causes or possible causes of obesity. Let me be clear that these are all theories. We do not know to any reasonable degree of certainty what the cause or causes of obesity actually are and the truth, as usual, is that for most people, there are many causes. But the science is interesting and for those of you who fancy a good mystery, this one is a classic. I hope that I do the various theories some justice.
FAT SCIENCE >