

Carbohydrates often get blamed for everything from weight gain to feeling sluggish. But the real story is more nuanced. Understanding what carbohydrates are, how they work, and which types to choose means you can make confident food choices without fearing the foods you love.
Low-carb diets make it seem like eating bread or pasta spells disaster for your waistline or health. The truth? It’s all about quality and quantity. Not all carbohydrates are the same, and their effects on the body and health vary. To pick one example, the majority of the calories in whole grains, legumes and vegetables are provided by carbohydrates. These foods have a low glycemic index, which research shows results in more stable metabolic changes, and are significantly more filling than other carbohydrate-containing foods. Fiber-rich carbs like these help keep things running smoothly by increasing stool bulk. Read on to find out more.
**TL;DR:**
Carbs aren’t the villain. It’s not about cutting carbs - it’s about picking the right types and amounts for your goals.
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Carbohydrates are one of the three main macronutrients in our diet, alongside protein and fat. They break down into glucose, which is your body’s go-to energy source. Carbs aren’t just about energy - they also support muscle recovery, contribute to gut health through dietary fiber, and play a role in the maintenance of normal brain function. Whole grains, vegetables, fruits, and legumes bring much more to the table than just calories.
Carbohydrates are a broad group with many different forms and properties. Which carbohydrate you're talking about matters - so let's break it down.
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Monosaccharides are the simplest form of carbohydrates. They are short chains of sugar such as glucose (which is commonly found in sports drinks) and fructose (the main sugar in fruit).
Disaccharides are made up of two monosaccharides joined together. Sucrose (table sugar) is the most common example.
Oligosaccharides are less well known, and often grouped under polysaccharides. Oligofructose, a subgroup of inulin, is widely used in food as a prebiotic.
Polysaccharides are the most complex form of carbohydrates, made of longer sugar chains. Polysaccharides are commonly found in foods like oats, lentils, vegetables, and sweet potatoes. These can be further separated into starches and fiber, read more here.
Starches are complex carbs, found in potatoes, rice, and beans. Starch is a good source of energy and contributes a range of nutrients to our diet.
Fiber is a type of carb that you can’t fully digest. There are two types:
Most people need at least 30 grams of fiber daily, but average intake is much lower. Read more on fiber here
Naturally occurring sugars in fruit or milk come packed with vitamins, minerals, and fiber. Added sugars found in soft drinks and many packaged snacks are often lower in fiber and other nutrients. Current dietary guidance is to keep added sugars under 10% of your total calories.
When you eat carbs, your body breaks them down into glucose. That glucose enters the bloodstream, triggering insulin release, which moves glucose into your cells for energy or storage. Fiber may slow this process, potentially leading to a lower blood glucose rise after eating.
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Understanding carbohydrates on food labels can be confusing. Here’s what to look for:
There’s no one-size-fits-all answer. Research suggests 45-65% of your total calories should come from carbs. Athletes and very active people often need more, since carbohydrate is the primary fuel for both brain and muscles during exercise. The key is to listen to your body, check how you feel, and aim for balance.
Carbs from whole foods:
Depending on the product, the carbohydrates in many Huel products are principally provided by grains, oats, tapioca, and flaxseed. In Huel Powder the carbohydrate sources are oats and tapioca starch. In Huel Black Edition Powder the carbohydrate source is tapioca starch. Huel Complete Nutrition Bar contains wheat. The Huel Ready-to-drink range contains tapioca starch, which contributes to the smooth texture. Huel Hot & Savoury contains brown rice/pasta/noodles and vegetables (ingredients vary between flavors).
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Q: What are carbohydrates and what do they do in the body?
A: Not all carbs are the same. Carbs are one of your main macronutrients, broken down into glucose for energy and storage.
Q: What is the difference between simple and complex carbohydrates?
A: Simple carbs are often found in energy drinks, fruits, and honey. Complex carbs often found in whole grains and beans contain fiber and may provide benefits such as keeping things running smoothly due to an increase in stool bulk.
Q: How do I read carbohydrates on nutrition labels?
A: Check total carbs, then focus on fiber and added sugars.
Q: Are low carb diets good for you?
A: This depends on your goals. Quality and variety of carbs are more important than cutting them completely. Humans eat foods, not individual nutrients, so cutting out stuff like carbs or fat is pointless.
Q: How much fiber do I need daily?
A: Aim for 30 grams a day. Fiber promotes regular bowel movements and slows down absorption of carbohydrates in the digestive tract. When increasing fiber intake, it is important to stay hydrated as fiber acts like a sponge.
Q: What are some example sources of carbohydrates?
A: Whole grains, fruits, vegetables and legumes are all carbohydrates that offer nutrients and fiber.