Are Carbs Fattening?
Many people cut carbs first when starting a diet — no rice, no bread, no noodles, just meat. But are carbohydrates really the enemy?
In short: carbs themselves don't make you fat. Excess calories do. One gram of carbohydrate is 4kcal — identical to protein.
What Carbs Do
- •Primary brain fuel: your brain needs about 120g of glucose a day
- •Exercise energy: the main fuel for high-intensity training
- •Muscle preservation: too few carbs and muscle gets broken down
- •Gut health: a source of dietary fiber
- •Mood regulation: needed for serotonin synthesis
Good Carbs vs Bad Carbs
Quality matters. Complex carbs digest slowly and steady blood sugar; simple carbs absorb fast and spike it.
- •Good carbs: brown rice, whole wheat, oats, sweet potato, beans, vegetables
- •Carbs to avoid: white rice, white bread, snacks, soda, candy
💡
Pick low-GI carbs. Brown rice (GI 55) serves a diet better than white rice (GI 84).
How Many Carbs While Dieting
| Diet | Share of total calories |
|---|---|
| General recommendation | 45-65% |
| While dieting | 40-50% |
| Low-carb | 20-40% |
| Ketogenic | 5-10% |
Ketogenic ratios need professional guidance.
⚠️
Extreme carb restriction can cause fatigue, poor concentration, constipation, and nutritional imbalance.
“Don't make carbs the enemy. Good carbs are a diet's friend.”
Sources · Korea Ministry of Food and Drug Safety food composition database