Prebiotic vs. probiotic: what's the difference?

Probiotics are easier to market: a strain name, a CFU count, a promise. But the bacteria already living in your gut outnumber anything a capsule adds, and they are shaped every single day by what you feed them.

Prebiotic fibers — acacia, inulin, baobab, resistant starch — pass through the small intestine intact and ferment in the colon. That fermentation produces short-chain fatty acids, which is the mechanism behind most of what people mean when they say "gut health."

If your plant and fiber intake is low, adding new bacteria without feeding them is like planting a garden and skipping the water.

You'll also see postbiotics — the beneficial compounds produced when microbes ferment fiber — and polyphenols, plant compounds found in things like turmeric, ginger and berries. Polyphenols behave partly like prebiotics and are commonly included for their role in supporting a healthy inflammatory response.

• Low fiber, irregular, heavy after meals — start with prebiotic fiber and consistency.
• Recently finished a course of antibiotics — a probiotic may be worth discussing with your provider, alongside prebiotic fiber.
• Already eating 30+ plants a week — you're doing the hard part; fine-tune rather than stack.

BIOGUTFUEL GUT RESET is built on the prebiotic side: acacia and psyllium fiber, African baobab, plus turmeric and ginger polyphenols, in one 13 g serving a day.