10/15/2026
I’m constantly asked by parents, “What can I do to strengthen my child’s immune system?”
And this probably isn’t the answer they’re expecting: FIBER !
There are two broad types:
💧 Soluble fiber dissolves in water and forms a gel-like substance in the gut. It can help with things like cholesterol, blood sugar regulation, and feeding beneficial gut bacteria.
🌾 Insoluble fiber adds bulk and helps keep things moving through the digestive tract.
And most whole plant foods actually contain a combination of both — which is one reason I’m a big fan of getting fiber from food whenever we can.
Fiber supplements can absolutely be useful. If you’re not getting enough fiber, supplementing is better than getting very little at all.
But a scoop of isolated fiber isn’t quite the same thing as eating whole foods. Whole foods give us different types of fibers along with vitamins, minerals and other plant compounds — and that variety helps support a more diverse gut microbiome.
My top 5 ways to get more fiber from food:
🫘 Beans and lentils
🫐 Berries
🥑 Avocado
🌱 Chia seeds
🌾 Whole grains — oatmeal, whole-grain bread, quinoa and brown rice