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Promoting this video and sending it back into the queue for one more try; last queued Thursday, September 29th, 2016 2:52pm PDT - promote requested by eric3579.

Agree with lots of it. Taste is definitely to a large part habitual, you definitely dull your sense of taste if you eat lots of sugary / salty foods.

However choosing potatoes is a terrible idea for a diet. Like sugar, starches rapidly turn to glucose, release insulin and promote addiction. They admittedly have high satiety and may be less calorie dense than what he was eating before (which is what caused the weight loss) but I would not suggest swapping one addiction for another.

Also I love refuting the instinctual assumption that you can lose weight eating badly by simply offsetting it with exercise. He's correct to stress diet over exercise. Exercise does make you lose weight (and has other health benefits) but the effect of high calorie food utterly dwarfs exercise:

http://www.vox.com/2016/6/29/12051520/exercise-weight-loss-myth-burn-calories-video

Also, it's more of a subjective thing, but lean meat proteins (eggs, chicken, fish) are very filling and can make it easier to avoid the high GI carbs that absorb into your body too fast to be used effectively and end up as excess body fat. I'd argue you're making your diet considerably more difficult if you try to give up meat at the same time as losing weight.

And yet he looks much unhealthier than before.

Im not saying he is unhealthier. I know he is healthier now, but he still looks kinda sick now. And its not only him, I see that on a lot of people that lose a lot of weight.

Well yeah, it's the same as the skin sag overweight people get around their waist when they lose massive amounts. Skin elasticity can only help so much and the older you get, the less collagen and elastin you have anyway.