Diet Percentages: Part 2
On a day to day basis, your body has certain nutrient requirements, a topic which is discussed in detail elsewhere in this book. As described in those chapters, those nutrient requirements are generally related to how much you weigh (or how much lean body mass you have). There are a few exceptions, places where the requirements for a given nutrient are absolute which I’ll mention when necessary.
Diet Percentages: Part 1
Commonly, when you see diet plans laid out, the intake of the various macronutrients (protein, carbohydrate, fat) is presented in terms of percentages of total caloric intake. So you might see a diet which was 60% carbohydrates, 30% protein and 10% fat or some other set of percentages. Or you’ll see recommendations that ‘…athletes only need 15% of their calories from protein.’ or ‘don’t eat more than 30% of your total calories from fat’, that sort of thing.
Carbohydrate and Fat Controversies: Part 2
As noted, the usual argument goes that high-fat diets cause high-cholesterol, heart disease, cancer, obesity and the rest, as evidenced by the high incidence of those disease in modern diets (which are typically high in fat). But that’s a questionable conclusion to draw.
Carbohydrate and Fat Controversies: Part 1
In this article, I want to look at carbohydrate and fat intake in terms of the various arguments and debates that tend to surround them.
The main controversy here revolves around what amounts of carbohydrates and/or fat are ideal, healthy, recommended, etc. and that’s what I’ll focus on. I’m not going to deal with body composition explicitly in this article, I’ll save that for another day.
Nutrient Metabolism Overview
In this chapter, I want to give readers a very brief and simplified overview of human metabolism and nutrient use. Which, for those who know a lot about the topic will realize, is an understatement of vast proportion. The complexities of human metabolism can and do fill up hundreds of pages in physiology books and this chapter should be taken with that in mind.
Is a Calorie a Calorie?
Simply put, the debate comes down to this: all that matters is caloric balance (calories in versus calories out) or do the source of those calories matter? The short and simple answer, of course, is ‘No’. The longer answer is what this article is about.
Calories, Nutrients or Food?
In this article, I want to look at a somewhat fundamental aspect of general nutrition; that is the distinction between calorie intake, nutrient intake, and food intake. This is relevant for the simple fact that the average person doesn’t think in terms of calorie intake, and they probably don’t think in terms of nutrient intake. Rather, they think in terms of eating food; thus it’s important to examine the distinction between those three ‘categories’ of intake.
