2024-10-16 · NutriFreaks
Macronutrients—protein, carbohydrates, and fats—are the primary nutrients the body needs. In previous posts, we discussed protein in detail. Now, let’s turn our attention to carbohydrates, one of the most important energy sources.
What is a Carbohydrate?
Carbohydrates are organic compounds composed of carbon, hydrogen, and oxygen. During digestion, they are broken down into glucose, which enters the bloodstream and provides energy to the body. Carbohydrates in our diet come in three forms: sugars, starches, and fiber.
- Sugars: These include simple molecules like glucose, fructose, galactose, sucrose, and lactose. Sugars are naturally found in fruits, dairy products, honey, and some vegetables like carrots and beets. Refined table sugar is a purified form of sucrose.
- Starch: A complex carbohydrate composed of glucose molecules linked together, found in foods such as grains, legumes, potatoes, and certain vegetables.
- Fiber: Found in vegetables, fruits, legumes, whole grains, nuts, and seeds, fiber is a carbohydrate that the body cannot fully digest. While it provides minimal energy, it plays a crucial role in digestive health. More on fiber later.
Understanding how carbohydrates are absorbed helps determine their impact on health and daily intake needs, which we will cover in the next post.