Here are two distinct facts:
1. I do have eyes and I can see a trend.
* I do not recall seeing less fat people as a child, but I do recall seeing more thin people now.
* I also notice that the fat people I see now seems on average younger than the fat people I recall from my childhood.
* I also notice that the fattest ones - those grossly obese instead of merely overweight - are both larger and more common now than what I recall from childhood (and I was practically raised by an aunt that used to be at the very top of the scale back then, but somehow found herself surpassed in the last 20 years or so).
2. We are told by the media that there are statistics that show an epidemic of overweight. The study pointed out claims that physicians consider overweight as one cause (not the cause) of sleep apnea. We are now told that there is also an epidemic of sleep apnea.
* If A causes B, and we observe an increase of both A and B. It is only logic that the "increase of A" is at least partially responsible for the "increase of B".
* It would make an interesting scientific study to figure out the degrees of correlation between "increase of A" and "increase of B". It would be even better if such study could conclude if such correlation is strong enough to justify calling "increase of A" a driving factor in the "increase of B" or not.
* On the other hand, it is a logical fallacy to claim that no conclusion can be reached regarding the causation/correlation between increases of A and B without "backing it up with facts". I will even claim that it is AntiScientific. If you start with that kind of attitude, you will never be able to form falsifiable hypothesis and therefore will be going through the motions of the scientific method without getting down to the substance.