Redwing57 said...
PeterDisAbelard. said...
...
Interestingly, they eat 6 1/2 pounds of impala meat (or similar) a day which represents a whopping 5000 calories. Why don't they get fat?
The answer is obvious.
Low-carb diets.
Or, maybe it's a diet of impala meat? Fairly equivalent conclusion. Maybe our problem is we just don't eat enough impala! Wonder if it makes good burgers?
Nah, just kidding. There was a TV show many years ago, maybe National Geographic, that went through the energy budget of many different animals. I hadn't thought of it that way before, but it was pretty interesting. It went into some depth on the cheetah because of its unusually precarious situation. As you point out they only work by ambush. It appears they have to be very careful about
doing so, because the show contended that they only have a very few, like perhaps 3-5, full-on sprints in them. If they aren't successful landing prey with one of them they won't survive, they'll be out of fuel. I don't know if that's true, but it is an interesting way to look at how nature fits organisms into various niches.
So why do you suppose people keep getting fatter? Is food just that much more available today? This article is a little alarming. Not a very good trend. It suggests "...three factors: we're eating less healthy food, we're eating more of it, and we're not moving around as much."
The average American woman now weighs as much as the average 1960s man50 years ago, maybe more, our medical and governmental authorities decided that fat was bad, saturated fat is really bad, and started strongly advising the population to eat more carbs and less fat. Because fat makes you fat and gives you heart disease as well(they said). And since saturated fat was the worst of it, they asked us to switch to PU vegetable oil, some of it hardened via hydrogenation(tranfats). And they asked us to cook with PU oils which when heated do bad things. In order to replace that saturated fat at all costs.
It seems they started America on this huge diet experiment with little to no evidence(good clinical trials) that their ideas were true. The clinical trials were either lacking or did not prove the theory. They also asked us to move more. Hence gyms and joggers are everywhere, many multiples more than in the past, though apparently we have not moved enough to make up for more carbs and less fat. So what has the result been for obesity? Diabetes? This answer also seems obvious. I would also ask about
heart disease which goes hand in hand with diabetes and pre-diabetes? I think there might be just as much heart disease as there ever was, maybe more, though their ability to rescue us via surgery and stents is vastly higher.
Post Edited (BillyBob@388) : 6/8/2018 2:00:42 PM (GMT-6)