Hello every one, this is Ronga. This is a video in answer to a question on the screen. Please click pause and check out the question first. “I’ve seen 2 videos about insulin and they each say something different. Which one’s right, Ronga?” To keep things simple. The question’s about insulin. This guy watched 2 videos on Youtube and got confused because these videos say opposite things. And s/he wants to know which one’s right. The first video says: Insulin is secreted less with unrefined carbohydrates than when the body is processing protein or fat. And the second video says: Because fat doesn’t raise blood sugar levels, it doesn’t stimulate insulin secretion. And even if insulin is secreted, that fat won’t be converted to body fat. I’ve never touched on this subject before, so I guess this guy checked other Youtubers’ videos and then came here and asked me for clarification. The guy asked me questions such: which one of these 2 videos is right? Why do people get obese when they eat carbohydrate and fat together? And if eating fat and carbo together causes obesity, do we need to eat them separately? And if we do eat them separately, how long an interval should we leave between eating them? Let’s take these one at a time. To begin with the first video’s view that insulin is secreted less for unrefined carbohydrates than when the body is processing protein or fat. To explain this view, we need to know some detail about insulin. To keep it as simple as possible insulin is a gatekeeper that puts nutrients into cells. It stores any excess carbohydrate we’ve eaten in fat cells, it puts any fat we’ve eaten into fat cells and it also puts protein into muscle cells to develop muscles. It’s often said that eating a large amount of carbohydrate is beneficial for anyone who exercises to build muscle or for gym instructors, because it increases glycogen storage in the muscles to allow for increased exercise intensity but it’s also because the enhanced amount of insulin brought on by the increased carbo intake helps muscle synthesis. But insulin is not always secreted in a regular amount. If you eat a lot of nutrients, it gets secreted a lot and If you have fewer nutrients coming in, it’s secreted less. As for unrefined carbohydrate like fruit and vegetables, their carbo content per gram is very low. But among the unrefined foods the protein & fat contents in meat and oils are high per gram. So more insulin is secreted when eating protein and fatty foods than when eating unrefined carbo. But in very simple terms, insulin responds to carbohydrate, fat and protein. And when we compare what happens when we eat low carbo (unrefined carbo), high fat and protein, it’s obvious that more insulin is secreted when we eat high fat and protein. Now, having watched this far, you might be asking: “If insulin is responding to fat and protein as well as carbo why are we only talking about insulin and refined carbo?” There’s a difference between the amount of insulin secreted in response to unrefined carbo, fat and protein. But there isn’t any additional insulin secreted due to an increase in blood sugar. Blood sugar is the concentration of glucose in the blood and this glucose is made from carbohydrate. So, if you eat less carbo, less glucose will be created and your blood sugar won’t increase that much. But refined carbos are digested and absorbed quickly and they also contain high amounts of carbohydrate. Therefore, if you eat refined carbo, it will cause your blood sugar level to spike. In order to reduce this, additional insulin is secreted (by the way, I’m calling this insulin “additional insulin” for the sake of clarity) and this additional insulin causes problems. If the first video is about insulin in general, then what it says isn’t wrong. However, this doesn’t mean fat and protein cause obesity. Obesity is caused by issues stemming from additional insulin and protein and fat alone don’t cause this additional insulin secretion. Now, to discuss the content of the second video, this says that: Because fat doesn’t raise blood sugar, it doesn’t stimulate insulin secretion. And even if insulin is secreted, this fat won’t be converted to body fat. The first video discussed insulin itself, regardless of obesity. It talked about ordinary insulin that does not impact obesity But this second video talks about the additional insulin that is related to obesity. What this means is just as we said earlier, no matter what we eat, insulin is secreted, and if we use fat as our example, we see that when we eat fat, insulin is secreted putting the absorbed fat into fat cells and increasing body fat. But this increased body fat is not related to obesity this is because, our body uses energy 24 hours a day, while we can’t eat round the clock. So whenever we eat, part of what we eat will always be stored as body fat. So for all the time when we’re not eating, our body uses energy from this reserve of body fat. Whether we’re on a diet or not, or whether we have an obese, or a normal body our body is programmed to store and burn a certain amount of body fat. This is the basic metabolism of the body. When we talk about obesity, we aren’t talking about this basic metabolism. That’s why I skipped this bit and focused mainly on the additional insulin and body fat accumulation related to obesity. Anyway, to recap the second video argues that: Because fat doesn’t raise blood sugar, it doesn’t stimulate the secretion of additional insulin and in the absence of additional insulin, there isn’t enough body fat accumulation to cause obesity. Therefore, it’s not about whether one video is right and the other wrong. They are both right but they’re discussing a different type of insulin: The insulin secreted whenever we eat and the additional insulin that’s secreted due to blood sugar issues. Finally, let me answer the last question: “Is it alright to eat carbo and fat together?” If you eat fat with unrefined carbo like fruit and vegetables, as you’ve eaten something, insulin will naturally be secreted. but as the blood sugar doesn’t spike, there won’t be any secretion of additional insulin. And as there isn’t any additional insulin secretion, unnecessary body fat won’t accumulate, and as there won’t be any fake hunger, obesity won’t develop. However, if you eat fat with refined carbo, insulin will be secreted as you’ve eaten something. But the refined carbo will cause your blood sugar to spike and to address this hike, additional insulin will be secreted. And this will cause glucose in the blood to be accumulated as body fat and fat that wouldn’t otherwise have changed to body fat, will do so because of the additional insulin secretion. Because the blood sugar rises and falls rapidly, blood sugar drop issues will occur and as the fat that should have used for energy is converted to body fat, energy conversion issues will arise. Because of those 2 factors, even if you’ve eaten enough food, you’ll experience fake hunger and crave snacks. And if you don’t endure these fake hunger pangs, give in to them and eat, this will cause obesity. To summarize, the issue is not caused by eating carbo with fat. It’s caused by refined carbo. If you eat unrefined carbo with fat, it won’t cause any problems at all. Makes sense, right?