Is protein slowing down your weight loss journey?

You’ve likely heard me say this before, protein is foundational. It supports your metabolism, stabilizes blood sugar, builds lean muscle, helps with satiety and plays a major role in hormone balance.

But what if you’re doing all the “right things”… increasing your protein, eating clean, prioritizing whole foods and still feeling bloated, sluggish, or stuck when it comes to weight loss?

This is where we need to look deeper. Because it’s not just about what you eat, it’s about how well your body can break it down and absorb it.

And one of the most overlooked pieces of that puzzle is stomach acid also known as hydrochloric acid (HCL).

The Role of Stomach Acid in Protein Digestion

Protein digestion begins in the stomach, not the intestines. When you eat protein, your body relies on adequate levels of HCL to denature those proteins, essentially breaking them apart so digestive enzymes can do their job.

Without enough stomach acid, protein isn’t properly broken down. Instead, it sits in the stomach longer than it should, leading to that heavy, full, uncomfortable feeling so many women describe after meals, you can also feel full quickly once you start eating.

Over time, this doesn’t just affect digestion, it affects your entire system.

Because if you can’t break protein down properly, you can’t absorb the amino acids your body needs for energy, muscle repair, neurotransmitter production, and hormone balance. Low HCL also contributes to leaky gut, which leads to gut dysbiosis. Its not just one thing, its the ripple effect we need to worry about.

Signs You May Have Low Stomach Acid

Low HCL is incredibly common, especially in midlife women dealing with chronic stress, hormonal shifts, or long-term yo-yo dieting.

It often shows up in subtle ways that are easy to overlook or misinterpret.

You might notice bloating shortly after eating, especially with protein-rich meals. There may be frequent burping, gas, or that “food just sits there” sensation. Some women experience acid reflux or heartburn, which is often mistaken for too much acid, when in reality it can be too little. When we have too little acid the muscle that closes off our stomach from our esophagus weakens, and doesn’t close tightly allowing acid to rise up into the esophagus creating that burning feeling. Unfortunately so many people are then prescribed antacids for the wrong reason!

Other signs can include undigested food in the stool, nutrient deficiencies (like B12 or iron), brittle hair or nails, fatigue, and even increased susceptibility to gut imbalances like bacterial overgrowth. (SIBO is a common one!)

When stomach acid is low, it also weakens one of your body’s first lines of defense, making it easier for unwanted bacteria to thrive.

Why Low HCL Impacts Hormones and Weight Loss

This is where everything connects back to your metabolism, cortisol, and insulin, the core of what I teach.

Protein provides the building blocks for hormones. If you’re not breaking it down properly, your body isn’t getting what it needs to produce and regulate key hormones like insulin, cortisol, thyroid hormones, and even estrogen and progesterone. Your stomach acid naturally decrease as you age and enter menopause. During perimenopause you are most symptomatic, this is when things are really loud, your symptoms are coming on strong and you just dont know what the heck is going on!! Your period shows up one month, and disappears for several, just because it is not coming doesn’t mean the production line as stopped! Things are just shifting, so its really important to keep the pathways open and the communication lines flowing.

Low stomach acid can also contribute to blood sugar instability. When protein isn’t properly digested, meals become more carbohydrate-dominant in how they affect your system, leading to spikes and crashes in blood sugar. This drives cravings, energy dips, and increased fat storage, especially around the midsection.

There’s also a strong connection between low HCL and chronic stress. When cortisol is elevated long-term, your body shifts out of a “rest and digest” state and into survival mode. Digestion slows, stomach acid production decreases, and your ability to properly process food becomes compromised. When our body experiences systemic stress cortisol will always steel from the production line, creating an imbalance between hormones. Which is not always a bad thing, Cortisol is our survival hormone, but we dont need it running the show!

So even if you’re eating well, your body isn’t fully benefiting from it.

And that’s often where weight loss resistance begins.

Supporting Your Stomach Acid Naturally

The good news is that your body wants to digest properly, it just needs the right support.

One of the simplest and most effective things you can do is slow down and become more present with your meals. Digestion begins in the brain, and eating in a rushed or stressed state significantly reduces stomach acid production. (no distractions, no screens, no work! no tech)

Taking a few deep breaths before eating, chewing your food thoroughly, and creating a calm environment can make a noticeable difference. I like to ask clients to look at there meal first and let their mouth start to water before taking that first bite!

Incorporating bitter foods can also help stimulate stomach acid. Think arugula, dandelion greens, lemon water, or a small amount of apple cider vinegar before meals.

Staying hydrated is important, but try to avoid drinking large amounts of water during meals, as this can further dilute stomach acid.

And perhaps most importantly, support your nervous system. Chronic stress is one of the biggest contributors to low HCL, and until that piece is addressed, digestion will continue to struggle.

Foods That Help and Foods That Hinder

When stomach acid is low, certain foods can feel more difficult to tolerate, especially in large amounts.

Dense proteins like steak or large portions of red meat may feel heavy or lead to bloating. Highly processed foods, refined sugars, and excessive snacking can further impair digestion and disrupt your body’s natural rhythm.

On the other hand, focusing on high-quality, easier-to-digest protein sources can be incredibly supportive. This might include eggs, fish, slow-cooked meats, and well-prepared poultry, and of course plant based proteins.

Pairing protein with bitter greens or lightly cooked vegetables can also help stimulate digestion and improve overall tolerance.

Fermented foods can be beneficial for some, but if you’re already dealing with bloating or gut imbalances, they may need to be introduced slowly and strategically.

Bringing It All Together

If you’ve been increasing your protein intake but still feeling bloated, fatigued, or stuck in your progress, your body may not be lacking effort, it may be lacking support.

Low stomach acid is one of the most overlooked root causes of poor digestion, nutrient deficiencies, hormone imbalance, and weight loss resistance.

When we support digestion at the foundational level, everything else becomes more effective. Your energy improves, your metabolism becomes more responsive, and your body can finally start using the nutrients you’re giving it.

This is exactly why in my work, we don’t just focus on what you’re eating, we focus on how your body is responding, adapting, and functioning as a whole.

Because true transformation happens when your body feels safe, supported, and nourished.