19/06/2026
Fibre One bars — not always the healthy snack they seem!
They’re high in sugar and saturated fat while being small in volume and low in protein, so they’re unlikely to keep you full between meals.
The main fibre source is chicory root extract (inulin), a prebiotic fibre that adds bulk and sweetness without many calories. While it can support gut bacteria, it can also cause gas, bloating, and digestive discomfort in some people, especially in large amounts or if you’re sensitive to fibre additives.