Calories deficit and insulin

fightdem

Hey guys,

I know 2 confusing theory about weight loss. In calorie deficit, we are getting fat if we eat more calories than we burn and it will be stored as fat. But in insulin theory, insulin distribute carbohydrate to muscle, brain, and also fat cell. So this really confuse me, if we eat carbohydrates insulin will always distribute it in muscle, brain, and also fat. But in calorie deficit, no matter what we eat we will lose weight if we stay calorie deficit. So, which one is true? Let's take an example, assuming we defy the health factor. If we eat calorie deficit of pure carbohydrates (like 400 g of carbohydrates = 1600 calorie, as a 18 year old person it's still deficit) will we lose weight with calorie deficit, or will we gain fat with insulin? Personally, i think we will gain fat and i don't really trust the calorie deficit in here (according to a lot of research). But i don't know the real answer and i'm still confuse. So, please tell me the real one. Thanks before !

yarwell

An excess of calorie intake over use will lead to storage of something - initially glycogen perhaps and ultimately fat.

If eating a high proportion of carbs they tend to be oxidised (to reduce blood glucose levels) under the influence of insulin signalling to muscles etc and the fats in the diet tend to be stored as they are surplus to requirements.

Elevated insulin will inhibit fat release from adipose tissue, which doesn't help fat loss. It can also increase fat storage, meaning that there's a potential deficit of usable calories because some are being squirrelled away. So people with hyperinsulinemia tend to get fat.

A 1600 calorie pure carb diet in an insulin sensitive active and healthy person of 18 would lead to fat loss, because the glucose would be used up without persistent high levels of insulin. In an insulin resistant person it could be different.