Medicine & Health
What is a Carbohydrate?
A carbohydrate is a nutrient made of sugars that is your body's main source of quick energy. Carbs range from simple sugars (like glucose) to complex starches and fibre — in bread, rice, fruit, and vegetables. Your body breaks them down into glucose to fuel your cells.
See it, don’t just read it.
Watch a 2-minute lesson with voice + animation that explains a carbohydrate.
Key things to understand
- 1Carbohydrates are the body's primary fuel — broken down into glucose, which cells use for energy.
- 2They come in simple forms (sugars, fast energy) and complex forms (starches and fibre, slower, steadier energy).
- 3Fibre is a carbohydrate the body can't fully digest — it aids digestion and gut health.
- 4They're found in grains, fruit, vegetables, legumes, and dairy.
- 5Excess carbohydrate the body doesn't use is stored as glycogen or fat.
Frequently asked questions
- What do carbohydrates do?
- They're your body's main energy source. Digestion breaks them into glucose, which your cells 'burn' to power everything you do.
- What's the difference between simple and complex carbs?
- Simple carbs (sugars) give fast energy and quick spikes; complex carbs (starches, fibre) release energy more slowly and steadily, and often come with more nutrients.
- Is fibre a carbohydrate?
- Yes — fibre is a carbohydrate your body can't fully digest. It doesn't give much energy but supports healthy digestion.