The 2.4g of fiber (9% DV) per 100g adds bulk to stool and feeds beneficial gut bacteria, which produce short-chain fatty acids that stimulate intestinal motility. This effect is cumulative, so you'll notice more regular bowel movements within a few days to a week.
Despite 10g of sugar, the fiber slows glucose absorption, preventing sharp spikes. The low glycemic load (about 6 per 100g) means your pancreas releases insulin gradually, reducing post-meal insulin surges. This benefit is most pronounced when eaten with a meal, not alone.
Blueberries are rich in anthocyanins (not listed in your data, but well-documented). These compounds neutralize free radicals, reducing oxidative stress on cells. Over weeks, this can lower markers of inflammation like C-reactive protein, but the effect is modest at 100g/day.
At only 240 kJ (57 kcal) per 100g and 84% water, blueberries are low-energy-dense. The fiber and water promote satiety, helping you eat fewer calories overall. However, the 10g sugar can add up if you eat multiple servings, so stick to one portion.
Verdict
Eating 100g of raw blueberries daily is a healthy habit that supports digestion and provides antioxidants, but watch your total sugar intake—combine them with nuts or yogurt to balance the sugar load.
⚠️ Who Should Avoid
- People with fructose malabsorption or irritable bowel syndrome (IBS) sensitive to sugar alcohols or fructose
- Individuals on a strict low-sugar diet (e.g., ketogenic or diabetic with poor glycemic control) due to 10g sugar per 100g