Nutrition tips from Chris Aceto

[Ashop]

Im not sure how old this is but Im pretty sure Chris Aceto has changed his perception on fats, and carbs a bit... Are carbs more thermic? Yes, but not by too much (long chain fatty acid comparison), and the effect on insulin levels may outweigh the benefits in comparison to the thermic effects of fats.

I need to look into his newer stuff. I used to really like his work in the past, although I didnt totally agree with it all.

 

[loganb_football]

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[doug1]

Chris makes a number of errors in this article.

1) It's completely misleading to say that "high-fat diets make you fat" when it's not macronutrients, but negative calorie balance that determines weight loss. Calorie balance already takes into account TEF on the energy out side. If you're eating well under maintenance, a diet is not going to make you fat, no matter how much of the diet is fat (or carbs).

2) Excess protein is rarely stored as body fat. Its primary fate is oxidation or gluconeogenesis (conversion to glucose). The pathway for de novo lipogenesis from amino acids plays a negligible role.

3) Leptin is produced by fat. It is doesn't signal fat cells to inhibit lipolysis.

4) The catabolism produced during a skipped meal (or overnight fast) is almost completely offset by increased protein synthesis during the next meal, such that protein balance is largely static. It makes no sense to be talking about a "muscle wasting state which, in turn causes the metabolism to slow." People appear to lose fat and maintain muscle just fine with intermittant fasting and only one big meal per day.

5) He contradicts himself to say that you should eat less later in the day, because of higher glycogen levels, but that it's fiction to avoid carbs at night.

6) He's incorrect to think that glycogen sotres are going to be anywhere near "full" at the end of a day of dieting. Absolutely not. When you're NOT dieting, it takes several days of massive carbohydrate overfeeding to fill up glycogen. Until that point (which is practically never reached, especially on a diet), there is essentially no conversion of carbs to fat. Rather, carbs are oxidized and stored as glycogen.

7) Caffeine is believed to increase metabolic rate primarily by inhibiting the phosphodiesterase-induced degradation of intracellular cAMP (thus increasing cAMP levels). Catecholaminergic stimulation or adenosine antagonism appear appear to play only minor roles.

good post, i especially agree with point 6