Why high fat and not just low/zero carbs?

(You've tried everything else; why not try bacon?) #41

And of the three, protein is not normally metabolised for energy, except during times of starvation. The body prefers to use the amino acids for structural purposes, gluconeogenesis, and the production of nitric oxide to regulate blood pressure. (The last two processes are why we lose a certain irreducible amount of nitrogen and therefore have to have protein in our diet.)

So the choice is really between eating lots of glucose (carbohydrate), with the resultant high level of insulin; or fatty acids (fat), with very little effect on insulin.

(Jack Bennett) #42

Exactly. And the whole “protein-energy diet” (P:E diet) approach overloads protein in order to reach satiety on lower calorie counts than you’d feel like eating if you ate foods high in “energy” (fat OR carbs).

So you prioritize protein first, to meet protein needs and reach satiety. Next, you prioritize fat in order to meet energy needs. And inevitably some carb comes along for the ride because nearly all whole foods have a little bit.

AKA “protein is a target, carbs are a limit, eat fat to satiety”

#43

Very interesting!

I only knew Ancel Keys from the infamous lipids shaming work.

So, back to his semi-starvation experiment, he found out a calorie reduction diet of a little over 1500 Kcal/day can decrease the BMR of young, healthy men and also mess up with their relationship with food.

I’d say most people react the same way when they cut their calories drastically. The rebound is fierce.

(You've tried everything else; why not try bacon?) #44

Kevin Hall’s study of “Biggest Loser” contestants (following up five years after they had been on the show) revealed that their metabolisms seemed permanently damaged, and they had regained all the weight they’d lost.

(David) #45

So, I am out for dinner later at a Thai Restaurant.

Whilst I won’t go crazy I’ll probably have a few beers and will almost certainly go over my carb limit.

Should I still have a bulletproof coffee this morning and eat a high fat/keto lunch?

Or would combining high fat with what I know will be medium/high carbs later be a recipe for disaster? no carbs until the restaurant of course

i.e am I better go med/low fat, med protein today ahead of my night out?

PS - either way I’ll fast tomorrow and get back on the horse as quickly as possible…