Don't misunderstand me, I said "for most," not "all." There are folks with legitimate weight issues due to neurophysical problems.
However, *again* for most *again* the effects can be greatly mitigated by consuming less calories than one burns in any given day. Furthermore, eating healthy all natural food rather than processed crap full of additives and preservatives will help tremendously. Not saying every girl will be a size 6 or every dude an adonis, but those simple actions will greatly reduce the chances anyone gets fat and signficantly help an individual lose weight.
I am certainly not discounting the scientific findings of a researcher other than saying "don't" eat that stuff.