How Often Should You Chew Your Food? The Science Behind Chewing and Digestion

asian-man-eating-hot-dog-near-young-girlfriend-5225480/
Image: Samson Katt

How Often Should I Chew My Food? A Scientist’s Take

We’ve all had those moments: I’m out to dinner with friends, enjoying the conversation, and then—wait a second—I glance down at my plate and realize I’ve already finished my entire meal, while everyone else is still munching away. Suddenly, I’m hit with a wave of disbelief: How did I eat that so fast? It’s like my brain sent an emergency signal to my stomach: “Eat faster!”

But then there was the time my friend had a few too many drinks and, well… ended up in the bathroom. When we went to check on her, she was bent over the toilet, crying, and suddenly gasped, “Oh my God, I didn’t chew my food!” Sure enough, there were whole chunks of steak—untouched, as if they’d just been swallowed whole. Talk about a wake-up call!

That’s when I started thinking: How often do I really chew my food? And how does that impact digestion? Spoiler alert: It’s not just about eating slower—there’s actual science behind why chewing is important. Let me break it down.

Chewing: More Than Just a Habit

Chewing might seem like a small part of the eating process, but it’s actually a critical step in digestion. When I chew, I’m not just breaking food into smaller pieces. My saliva, which contains digestive enzymes, mixes with the food to start breaking down carbohydrates. This is the body’s way of preparing food for easier digestion further down the line.

Dr. Elizabeth Johnson, a nutrition expert at Harvard University, puts it this way: “Chewing triggers the release of digestive enzymes in your saliva that start the process of breaking down carbohydrates right in your mouth. This sets the stage for smoother digestion down the line.” In other words, every time I chew, I’m giving my digestive system a head start. So, even though I’m focusing on enjoying my meal, my body is already working to absorb those nutrients more efficiently.

How Often Should I Chew?

Now, the real question: How often should I chew? Well, there isn’t a magic number, but research shows that the more I chew, the better it is for digestion, fullness, and even weight management.

In a study published in the Journal of the American Dietetic Association, researchers found that people who chewed each bite 40 times, instead of the typical 15-20, ate fewer calories and felt fuller faster. Source: Journal of the American Dietetic Association, 2009. It makes sense: the more thoroughly I chew my food, the easier it is for my stomach to digest it. Plus, my brain has more time to register when I’m full, which helps me avoid overeating.

So, Should I Count My Chews?

Now, I don’t know about you, but counting 32 chews per bite sounds like a recipe for stress (and probably some very weird looks from my dinner companions). The truth is, there’s no need to obsess over the exact number of chews. The real goal is to chew thoroughly enough to make the digestive process easier on my stomach.

Dr. Jane Murphy, a gastroenterologist at Stanford University, explains: “Chewing food more thoroughly allows your stomach to do less work. It can prevent bloating and discomfort, especially for people who struggle with digestion issues.” So, no need to stress about every single chew. It’s more about giving my body time to break down the food properly, without overwhelming my stomach.

-boy-in-green-crew-neck-t-shirt-holding-brown-bread-6182597/
Image: RDNE Stock project

Chewing and Weight Management: The Science Behind It

Another fascinating point? A study published in the American Journal of Clinical Nutrition found that people who chewed their food more slowly and thoroughly ate fewer calories, even though they weren’t actively trying to eat less. Source: American Journal of Clinical Nutrition, 2011. The study showed that when people took more time to chew, they felt fuller sooner, which helped them avoid overeating.

This is what we call mindful eating—slowing down, savoring each bite, and allowing my brain the time it needs to recognize fullness. The more I chew, the better my body can gauge when I’m satisfied, making it easier to stop eating before I overdo it.

What’s the Bottom Line?

Here’s the bottom line: I don’t need to count each chew, but I should aim to chew more thoroughly. Around 20-30 chews per bite is a good guideline. The key is slowing down and giving my body enough time to process the food before it moves through the digestive system.

As Dr. Murphy says: “It’s not about counting every chew; it’s about slowing down and being present with your food. Your body will thank you for it in terms of digestion and overall satisfaction.”


Takeaway Tips for Better Chewing:

  1. Chew thoroughly: Aim for 20-30 chews per bite. Don’t worry about counting—just make sure the food is well broken down.
  2. Slow down: Give yourself time to enjoy the meal. It’s not a race.
  3. Mindful eating: Avoid distractions like your phone or TV. Focus on the flavors, textures, and how the food makes you feel.
  4. Stay hydrated: Drink water throughout the meal to help digestion.

So, next time I sit down to eat, I’ll remember my friend’s “wake-up call” and slow down. I’ll chew more thoroughly, listen to my body, and savor the moment. Because chewing might seem like a small thing, but it has a big impact on digestion, nutrient absorption, and even weight management.


Sources:

  • Journal of the American Dietetic Association: Link
  • American Journal of Clinical Nutrition: Link