Low-FODMAP doesn't mean sugar-free

If you've started a low-FODMAP diet and quietly said goodbye to every sweet thing you love, I want to stop you right there. Most people assume "low-FODMAP" and "sugar-free" are the same rule. They're not. A lot of the sweeteners you already have in your kitchen are perfectly fine for your gut, and knowing which ones lets you keep baking, keep enjoying a treat, and stop treating dessert like the enemy.

Here's the part that trips people up. FODMAPs are specific fermentable carbohydrates, and only some sugars fall into that group. When you have IBS or SIBO, you don't break those particular ones down well, so bacteria ferment them and you get the gas, bloating, and cramping. The trouble usually comes down to fructose and the sugar alcohols, the ones ending in "-ol." Plain table sugar isn't one of them. That's why you can cut out onion and garlic and still stir sugar into your coffee without a problem.

So let me sort your sweeteners into three simple buckets.

The ones you can use without counting

Table sugar (sucrose), maple syrup, and rice malt syrup are all low-FODMAP with no meaningful limit for your gut. These are your go-to swaps when a recipe calls for something sweet.

The ones that are fine in small amounts

Honey, agave, and molasses each have a low-FODMAP serving, they just stack up fast because they're high in fructose. Honey is fine up to about half a teaspoon, agave up to a teaspoon, and molasses up to a teaspoon. Not off-limits. Just stay at the portion instead of drizzling with a free hand.

The one to leave on the shelf

High-fructose corn syrup is high-FODMAP at every amount, with no safe serving. There's no portion trick here. It's also hiding in more packaged foods than you'd think, so it's worth reading labels for.

Now, one thing I need to be clear about, because I'm a dietitian before I'm your baking cheerleader. Low-FODMAP tells you what won't trigger your gut. It does not mean "healthy," and it's not my green light to pour sugar on everything. Sugar in excess still drives inflammation, and that's true whether or not it bothers your digestion. So use these to make a homemade treat fit into your life, watch your portions, and keep the big picture in mind.

That's really the whole point of doing low-FODMAP the right way. It was never meant to shrink your world down to a handful of "safe" foods. It's meant to hand you back the ones that work for you, so you can bake, enjoy, and feel good doing it.

If you want help doing low-FODMAP without losing the foods you love, apply to work with me.

Fix your gut, fix your life.

Sweetener portion thresholds verified against the Monash University Low-FODMAP app by Sarah Mirkin, RDN, July 18, 2026.