Four small changes.

That's all it took to cut the blood sugar rise from a bowl of Cheerios nearly in half. Yesterday I put that cereal on trial with my glucose monitor. Today, I want to walk through exactly how I did it... step by step.

But first, some context.

A study published this year in the British Food Journal looked at 103 children's cereals sold in Canadian supermarkets. Almost 90 percent of them carried health claims right on the front of the box. Words like "whole grain" and "good source of fiber." And yet, on average, 30 percent of their calories came from sugar.

Meanwhile, in Europe, cereal makers have cut the average sugar in their products by 18 percent over the past decade, according to new data from CEEREAL, the European breakfast cereal trade group. So some progress is happening overseas. But in North America, the gap between what the box promises and what's inside is still wide.

I saw that gap on my monitor this week. One cup of Cheerios with skim milk raised my blood sugar about 72 points. The University of Sydney's glycemic index database puts Cheerios at 75, which is right alongside white bread.

But the same cereal, with four changes to the bowl around it, raised my blood sugar just 30 points.

Here's the before and after.

This is one person's experiment, not medical advice. Everyone's body responds differently.

So why did it work?

It comes down to this: cereal with skim milk is almost pure fast carbs. There's very little protein, fat, or fiber to slow things down. Your body converts the starch and sugar to glucose quickly. It all enters your blood at once.

Add protein, fat, or fiber to that bowl, and you slow the whole process down. In other words, you give your body more time to handle the sugar instead of getting it all at once. The rise is smaller.

This isn't just my monitor talking. A study from the University of Stirling, published in Nutrients this past August, tested this directly. Researchers gave 25 young people a cereal breakfast that raises blood sugar quickly. When they added just 10 grams of protein to the same meal, blood sugar stayed in a healthier range.

Ten grams. That's two eggs.

It makes sense when you think about it. Protein takes longer for your body to break down than simple carbs. So when protein arrives alongside the cereal, everything slows down. The blood sugar rise spreads out over a longer window instead of coming all at once.

● The Method

Here's the full method. Four steps, all easy, all backed by the science above.

● The Dos & Don'ts

A few things to keep in mind.

Do pick a cereal with at least 3 grams of fiber per serving. More fiber means slower digestion, which means a smaller blood sugar rise.

Do try full-fat Greek yogurt instead of milk for an even bigger buffer. One serving has about 15 grams of protein.

Do measure your cereal. Most people pour about twice the listed serving size without thinking about it. That doubles the sugar hitting your blood.

Don't add honey, maple syrup, or extra sugar. Most cereals already pack 8 to 12 grams of sugar per serving. Adding more just makes the rise steeper.

Don't reach for oat milk as your "healthy" swap. Most oat milks are higher in carbs and lower in protein than whole cow's milk.

And don't skip the protein. It's the single biggest lever. Without protein or fat to slow things down, cereal is just fast carbs that hit your blood all at once.

I'll be honest about something. My kids eat cereal most mornings. They like it, and I'm not here to take it away.

But I've made three quiet changes at home. I switched to whole milk. I keep a jar of walnuts on the counter next to the cereal boxes. And I scramble a couple of eggs before anyone pours a bowl.

They don't notice. But when I check my glucose monitor after breakfast... the line barely moves. It used to look like a mountain. Now it looks like a gentle hill.

My wife noticed the change before I said anything. She saw the eggs and walnuts appearing every morning. When I showed her the two monitor readings side by side, she just said, "Keep making the eggs."

We don't have to give up cereal. We just have to stop eating it alone.

Stay steady