Certain diet plans claim that a person may eat all the protein he or she wants, as protein is not stored by the body. Is this claim completely accurate? Explain.

Video transcript

Hi, everyone. Welcome back. Our next problem says, determine which statement is correct regarding macronutrients. A carbohydrates give the fastest source of energy when digested B lipids provide the highest source of energy C proteins when digested are converted back to glucose or D all of the above. So we were called macronutrients are those essential substances for our body that we need in fairly large amounts. So let's evaluate our choices given that we have this d all of the above. So a carbohydrates give the fastest source of energy. Well, this is true. Carbohydrates are converted into glucose almost immediately after ingestion. That's the source of that. Um you know, sugar rush that you might feel even when you know eating starchy things. So that process is very quick, happens right away. Carbohydrates are a fast immediate source of energy. So choice A is definitely true. But again, we can have more than one correct answer. So let's look at choice. B lipids provide the highest source of energy. Well, this is true. Also, lipids are the most uh energy dense of all the micronutrients. They have about nine calories per gram uh worth of energy. Whereas proteins and carbohydrates provide about four calories per gram of energy. So the lipids are the highest source. They provide about half of your body's fuel needs and just daily activities because of this. So this is also true. Well, because we already have two correct answers, we know that choice D must be our answer all of the above. But to be thorough, let's look at choice C here. Now, this is perhaps the trickiest one proteins when digested are converted back to glucose. We don't always think of that. But proteins are a source of gluco neogene substrates or sort of glucose precursors and the process of gluco neogenesis or the production of glucose from proteins as we recall can occur when a person is fasting or starving for that matter or on a low carbohydrate diet. And people often um use this on purpose. But that again, we don't always think of this but there is this Glucon neogenesis process that allows a production of glucose from the breakdown of proteins. So choice C also correct, meaning that our final answer is choice D all of the above our correct statements regarding macronutrients. See you in the next video.