How does digestion work?

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Do you ever eat something and immediately wonder where it went, or why your stomach’s suddenly having a full-on conversation with itself? Digestion might not be the most glamorous topic, but it’s the star of the show when it comes to energy, mood, immunity, and general wellbeing.

If you’ve ever looked into gut health supplements, you’ve probably seen the term “digestion support” thrown around a lot. But what does that mean? What’s really going on behind the scenes every time you take a bite?

What happens right after you eat?

The moment food hits your mouth, digestion begins – even if all you’re thinking about is how good that burger is. Your teeth break the food down mechanically while your saliva starts dissolving starches. Then, once you swallow, food moves through your oesophagus into the stomach.

That’s when the heavy lifting starts. Your stomach releases acid and enzymes that work together to break everything down into a thick, liquid mixture called chyme. Think of it as the blender stage of digestion. From there, it moves into your small intestine, where your pancreas releases enzymes to break down fats, carbs, and proteins. Meanwhile, your liver releases bile (via the gallbladder) to help emulsify fats – basically, it turns them into a form your body can absorb.

By this point, your food isn’t really food anymore. It’s been converted into tiny nutrients that your small intestine can absorb and send into your bloodstream. And just like that, what you eat becomes energy, fuel, and building blocks for everything from your skin to your hormones.

What does your gut do with the rest?

Once your body’s pulled out all the good stuff, what’s left heads into your large intestine. That’s where your gut bacteria take over. These microbes get busy breaking down leftovers your body couldn’t handle alone, especially fibrous bits from veggies, grains, and legumes.

As they do this, your bacteria produce helpful byproducts like short-chain fatty acids, which support colon health, promote a stable internal environment, and even influence your brain chemistry. Your large intestine also reabsorbs water and firms up waste so it can be efficiently escorted out of the body.

Tips to support healthy digestion daily

Here are some easy ways to help your digestive system do its thing more smoothly.

Chew like you mean it

It sounds basic, but most of us rush through meals like we’re on a timer. The more you chew, the more you help your body out.

Saliva breaks down carbs in your mouth, and slower eating gives your stomach time to prepare. Aim for 15 to 20 chews per bite (yes, really). You’ll likely feel fuller, less bloated, and more in tune with your hunger cues. Plus, your digestive tract won’t have to work as hard to clean up after you.

Drink water (but don’t drown your meal)

Hydration keeps everything moving – literally. Water helps dissolve the nutrients in your food so your body can absorb them, and helps keep your intestines functioning smoothly. But chugging a gallon with your meal isn’t the way to go as it can dilute stomach acid and slow down digestion.

Instead, sip throughout the day and keep your fluids steady. A glass of water 30 minutes before a meal is a great habit that supports digestion without interfering with it.

Get your body moving

You don’t need to run a marathon, but a quick walk after meals can do wonders. Movement helps stimulate the muscles of your GI tract (aka peristalsis), which keeps things flowing from top to bottom. Even 10 minutes of light walking after dinner can help reduce sluggish digestion, gas, or that overly full feeling. It’s also a nice way to unwind and avoid heading straight for the sofa post-meal.

Pay attention to what you feed your gut

Fibre-rich foods like vegetables, beans, and whole grains keep things moving, while fermented foods like yogurt, kimchi, and kefir deliver natural probiotics. If you can’t always fit those in, a quality supplement can help. Look for one with diverse strains and billions (with a B) of CFUs. Think of it as backup for your busiest, least veggie-filled days. Probiotic supplements can be used for a variety of needs, whether it’s URO probiotics for your intimate microbiome or a gut-specific formula for your digestion. Always read the bottle, and explore the wide range of uses for probiotics in the body.

Trust your gut 

Now that you know what’s going on behind the scenes with your digestion, you’re better equipped to support it. 

Start by tuning in: if you’re constantly bloated, low on energy, or things just feel off, your gut might be trying to tell you something. A chat with your doctor or a quick check-in with a dietitian can offer clarity and real solutions. You know your body best – and now you know your gut better, too.