You Think It’s Your Weight. I Want to Talk About Your Gut.

If you told me you wanted to lose 20 pounds, you might expect us to start by talking about calories, portion sizes or exercise. I’d want to talk about your digestive health.

That may sound strange if you don’t have obvious digestive symptoms. But your gastrointestinal system does far more than process yesterday’s lunch. It houses trillions of microorganisms that interact with the food you eat and produce compounds that are involved in metabolic processes throughout the body. Researchers continue to investigate the relationship between the gut microbiome, inflammation, appetite regulation, insulin sensitivity and body-weight regulation.

That doesn’t mean there’s a magical combination of “good gut bacteria” that makes excess weight disappear. There isn’t. Weight regulation is complex and influenced by food intake, physical activity, genetics, hormones, sleep, medications, environment and other factors.

But it does mean that if weight loss is your goal, ignoring digestive health doesn’t make much sense.

Before you eat LESS, look at WHAT you’re eating

For decades, conventional weight-loss advice has focused heavily on restriction: fewer calories, smaller portions, fewer carbohydrates, less food.

I look at it differently.

Before worrying about how much you’re eating, take an honest look at what you’re eating. Are you getting enough fibre? How much variety is there among the plants you eat? Are most of your carbohydrates coming from intact or minimally processed foods, or highly processed ones? Are you eating foods that support both you and the microorganisms living in your gut?

Fibre is particularly important. Foods such as vegetables, fruit, beans, lentils, whole grains, nuts and seeds provide different types of dietary fibre. Some fibres are fermented by gut microbes, producing compounds called short-chain fatty acids. These compounds are being studied for their roles in intestinal health, glucose and fat metabolism, immune signalling and appetite regulation.

Fibre also tends to increase satiety, which matters when weight loss is the goal. Instead of building a diet around how little food you can tolerate eating, you can begin building one around foods that nourish you, support digestive health and actually help you feel satisfied.

That’s a very different approach to weight loss.

“But my digestion is fine.”

This is where things get interesting, because you don’t necessarily need to have severe stomach pain or obvious digestive disease for your digestive health to deserve some attention.

Start with something incredibly basic: your bowel movements.

Healthy bowel habits can vary between individuals, but regularly going days without a bowel movement, frequently straining, passing hard pellet-like stools or consistently feeling as though you haven’t completely emptied are worth paying attention to. Your bowel habits are one of the ways your digestive system communicates with you.

Bloating, gas and discomfort matter too, particularly when they happen regularly rather than occasionally.

When a woman comes to me wanting help with weight loss, I’m not only interested in what she weighs or how many calories she’s eating. I want to know how often she’s having a bowel movement, whether she’s bloated, how she is sleeping, what her energy is like, what she is craving, what she is actually eating in a typical day. Those clues help me understand what we may need to work on first.

And then there is what you are feeding your gut.

A diet containing a variety of fibre-rich plant foods provides substrates that different gut microbes can use. Research has repeatedly associated dietary patterns rich in diverse plant foods and fibre with differences in gut microbial composition and function. We’re still learning exactly what an “ideal” microbiome looks like and it likely isn’t identical from one person to another. But we know enough to say that what you eat affects the ecosystem living in your gut.

That matters when we’re talking about metabolic health.

Your gut isn’t working in isolation

One of my favourite ways to explain this is to think about a nervous stomach.

You have an important presentation coming up. You’re waiting for difficult news. You’re about to walk into a stressful conversation. The situation is happening in your brain, yet suddenly you feel butterflies, nausea or an urgent need to find a bathroom.

Nobody finds that particularly surprising.

What is less obvious is that communication between the gut and brain travels in both directions.

The gut-brain axis involves neural, hormonal, immune and metabolic pathways, with the vagus nerve playing an important role in that communication. Gut microbes and the compounds they produce are also part of an active area of research into how the gastrointestinal system communicates with other systems in the body.

This is one reason I think we need to move away from viewing weight as an isolated problem that can always be solved by simply applying more discipline. Appetite, stress, sleep, digestion, eating patterns and metabolic health don’t operate independently of one another. Your body isn’t a calorie calculator. It’s a collection of interconnected systems.

So where can you start?

You do not need an expensive probiotic, a greens powder or a fridge full of kombucha to begin taking better care of your gut.

Start with food.

Look at how much fibre you are actually getting in a typical day. A practical target for many adults is around 25–35 grams per day, although individual needs can vary. If you’re currently eating very little fibre, increase it gradually and make sure you’re drinking enough fluid rather than suddenly doubling your intake overnight.

Next, look at plant diversity. Instead of eating the same three vegetables every week, think about adding variety across vegetables, fruits, legumes, whole grains, nuts, seeds, herbs and spices. Different plants provide different fibres and phytochemicals, which in turn interact differently with the gut microbiome.

Fermented foods can also be part of a gut-supportive diet. Foods such as yogurt or kefir with live cultures, sauerkraut, kimchi and other traditionally fermented foods can add another dimension to what you’re eating. They aren’t magic, and you don’t need to force yourself to eat foods you hate in the name of gut health.

And finally, pay attention to your body. How often are you having a bowel movement? Is it easy to pass? Are you regularly bloated or uncomfortable? Do certain foods consistently seem to trigger symptoms? Has something you’ve accepted as “normal for me” actually been bothering you for years?

If you have persistent or significant digestive symptoms, unexplained weight changes, blood in your stool, severe pain or other concerning symptoms, that’s a conversation to have with your healthcare provider rather than something to self-treat with supplements or dietary restriction.

Weight may be what gets your attention. Your gut may deserve some of it too.

There is no single gut-health diet that guarantees weight loss, and our understanding of the microbiome is still evolving. But we do know that digestive health, dietary fibre, the gut microbiome and metabolic health are interconnected.

So, if you’ve spent years trying to lose weight by simply eating less, perhaps the next question isn’t “How can I cut more?”

It might be:

“What am I actually feeding my body…and my gut?”

If you’re wondering whether digestive health might be one of the things getting in the way of feeling your best, I’ve created a simple place to start.

My free Root Cause Quiz takes about 90 seconds and helps identify whether Gut Health, Inflammation or Healthy Systems may deserve more of your attention right now.