The Carb Code: Mastering Blood Sugar with Pasta, Rice, and Oats

We all love a good pasta night, but let’s be honest, if you’re someone who’s mindful of blood sugar, the thought of indulging in these favourites can come with a side of guilt...

The Carb Code: Mastering Blood Sugar with Pasta, Rice, and Oats

By Hilary Metcalfe 

Carbs and I have always had a complicated relationship.

I love them, unapologetically. From a creamy risotto to a comforting bowl of oats on a cold morning, they’ve always been my culinary love language. But as a nutritionist who’s battled hormone-related blood sugar swings, I know that my body doesn’t always love them back.

There was a time when a bowl of pasta meant an inevitable crash: brain fog, mood dip, that “I need something sweet” feeling right after dinner. I used to think this meant carbs were the problem. But over time, I learned that it wasn’t about cutting them out, it was about understanding them.

You don’t have to give up your favourite comfort foods to keep your blood sugar steady. With a few clever, science-backed tweaks, you can enjoy your carbs, pasta, rice, and even potatoes, while keeping your energy and hormones balanced.

Today we’re unlocking the secrets of the carb code, showing you how to manipulate the starch structure in these foods so you can have your carbs and eat them too! 

Xx, Hilary - Cofounder of The SABI


Understanding Carbs, Insulin & Hormones

Carbohydrates are the body’s main energy source, broken down into glucose to fuel your cells. The rate at which this happens depends on the Glycemic Index (GI) — a measure of how quickly a food raises blood sugar.

  • High-GI foods (like white bread or overcooked pasta) cause rapid glucose spikes, triggering a surge of insulin.

  • Low-GI foods (like lentils, quinoa, or al dente pasta) release glucose more gradually, keeping your blood sugar stable.

When blood sugar spikes repeatedly, your body releases excess insulin — and over time, this can lead to insulin resistance, a key driver of inflammation, PMS, fatigue, and hormonal imbalance.

But here’s the empowering truth: the GI of your food isn’t fixed. The way you cook, cool, and combine your meals can literally change how your body responds.


How Hormones Influence Blood Sugar

Stable blood sugar means stable hormones.

When glucose rises, the pancreas releases insulin to move sugar into your cells. But insulin doesn’t act alone — glucagon, amylin, and cortisol all play supporting roles, influencing energy, mood, and appetite.

If these systems stay balanced, your blood sugar follows a gentle wave — not a rollercoaster. You feel steady, focused, and calm. But if cortisol (your stress hormone) spikes, or insulin floods the system, that balance tips — triggering cravings, energy crashes, and irritability.

The key is creating hormonal harmony through food, stress management, and digestive support.


The Science of Smart Starches

The structure of starch changes depending on how you cook, store, and combine your meals. These small shifts can drastically reduce blood sugar spikes and help your gut microbiome thrive.

Technique Why It Works Practical Example
Add Healthy Fats Fats slow down carbohydrate digestion, preventing sharp glucose spikes. Add nut butter to oats, olive oil to pasta, or avocado to toast.
Cook Al Dente Less breakdown = slower glucose release. Slightly undercook pasta or rice for a lower GI.
Cool Before Eating Cooling increases resistant starch — a fibre-like compound that stabilises blood sugar. Chill rice or potatoes before eating; reheat if desired.
Freeze & Reheat Repeated cooling forms even more resistant starch. Freeze bread, then toast; freeze cooked rice, then reheat.

These simple tweaks turn your favourite comfort foods into functional foods — supporting both gut health and metabolic balance.


Functional Nutrition: Eating for Hormonal and Digestive Harmony

Stable blood sugar isn’t just about energy — it’s the foundation of hormonal equilibrium, cognitive clarity, and even skin health.

Here’s how to bring that stability to your everyday meals:

  • Pair carbs with protein and fat: This combination slows digestion and supports sustained energy.

  • Add fibre and prebiotics: Think leafy greens, artichokes, leeks, and whole grains — they feed your microbiome and modulate glucose response.

  • Stay hydrated: Adequate water and herbal infusions support enzyme activity and nutrient transport.

  • Eat mindfully: Digestion starts with your nervous system — slowing down helps regulate cortisol and insulin.

When your body digests slowly and evenly, your hormones stop fighting for balance — and start working with you.


Digestive Support for Blood Sugar Balance

Even with the best nutrition, blood sugar spikes often start in the gut. A sluggish digestive system or disrupted microbiome can amplify glucose fluctuations, leading to bloating, cravings, and energy dips.

That’s where The SABI Digestive Herbata comes in — a herbal infusion designed to support balanced digestion and stable blood sugar through prebiotic botanicals and adaptogenic herbs.

Key Ingredient Function How It Helps Blood Sugar
Cinnamon Bark Enhances insulin sensitivity Helps glucose enter cells more efficiently
Holy Basil (Tulsi) Reduces cortisol and inflammation Calms stress-induced sugar cravings
Moringa Leaf Regulates glucose metabolism Supports liver and pancreatic function
Cardamom & Vervain Aid digestion and motility Reduce post-meal bloating and discomfort
Nettle Leaf Mineral-rich diuretic Supports metabolic detox and hydration

Sipping The Digestive Herbata after a carb-heavy meal helps moderate the body’s glucose response by improving insulin efficiency, soothing inflammation, and supporting the gut-brain axis.

Think of it as your after-dinner reset — a gentle way to balance blood sugar and restore comfort without restriction.


Everyday Tweaks That Make a Difference

Oats — Soak overnight to reduce phytates and add flaxseed or nut butter for fat-fuelled stability.
Rice — Cook with coconut oil, cool overnight, and reheat before eating to boost resistant starch.
Bread — Freeze and toast whole-grain bread to lower its GI. Top with avocado or ricotta for slow-release energy.
Pasta — Cook al dente, toss with olive oil and greens, and pair with protein for balance.

These are the small, evidence-backed rituals that let you enjoy comfort foods without the crash.


Why This Matters for Women’s Health

For women, blood sugar stability is hormonal stability.

Every glucose spike affects insulin, which influences oestrogen, progesterone, cortisol, and even thyroid hormones. Over time, this affects everything from PMS to sleep to skin. Keeping blood sugar steady supports better cycles, calmer moods, and fewer energy dips — the foundation of hormonal resilience.

And this is where daily rituals — a mindful meal, a herbal infusion, a short walk after eating — become your most powerful form of self-care.


Decoding the Carb Code for Good

Cracking the carb code isn’t about deprivation — it’s about decoding your body’s language.

When you understand how food, hormones, and digestion interact, you can eat in a way that truly nourishes — not punishes. Imagine eating your favourite pasta or oats, sipping a calming cup of The Digestive Herbata, and knowing you’re supporting your metabolism, gut, and hormones all at once.

We all love a good pasta night, don’t we? That’s food freedom.

Want a deeper dive?

The Blood Sugar-Hormone Link: How Insulin Resistance in PCOS Impacts Health Beyond Reproduction

The Hidden Cost of Fatigue: What Your Diet Isn’t Telling You

Nourishing Your Hormones: How a Balanced Diet Can Support Hormonal Health Through Every Stage of Life

 

Hilary is the Co-Founder of the SABI, a Holistic Nutritionist, natural, whole foods Chef, product developer and advocate for women getting to know their bodies, cycles and selves better. Born in Los Angeles, California and raised in Baja California, Mexico, she now lives in Los Cabos with her partner Kees, a curly-tailed rescue dog from Curacao, Flint and her rainbow babies Paloma and Bea.  

HORMONAL & PROUD

Created as a brand to help women navigate the toughest moments in pregnancy, childbirth, postpartum — and practically every stage of life –– The SABI aims to change the narrative around our hormones from one of taboo, embarrassment, and loneliness to awareness and pride. As more than a wellness brand, The SABI offers a carefully-crafted line of products to carry you through your hormonal journey, including rituals, supportive tools, and ancient herbal remedies that have been tested time and time again by women and now come backed by medicine. The SABI is a blend of science and nature conceived by women who have experienced the joys and deep struggles of bringing a child into the world, the pains of a heavy, difficult period, miscarriage, and difficulty conceiving.

We offer you an invitation to get to know your body and its cycles better –– an invitation to really understand what is going on inside. Learn to use your hormonal cycle to your advantage no matter your stage of life, and know that you can support and balance your hormone levels. Look for the right sources of information. Know that there is help, and know that you’re supported.


DISCLAIMER

The SABI blog and articles are not meant to instruct or advise on medical or health conditions, but to inform. The information and opinions presented here do not substitute professional medical advice or consultations with healthcare professionals for your unique situation. 

REFERENCES

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