We’ve all tried to cut sugar—usually to squeeze into that killer dress or feel a bit healthier after a big weekend. But did you know that sugar doesn’t just affect your waistline? It’s actually a major culprit when it comes to premature ageing and skin flare-ups.

So, why is sugar so bad for your skin?

Let’s break it down.

When you eat sugar—or even high-glycemic foods like white bread and pasta—your body rapidly converts them into glucose. That glucose spikes your insulin levels, triggering a burst of inflammation throughout your body.

Inflammation is the enemy of glowing skin. It produces enzymes that break down collagen and elastin—the proteins that keep your skin firm, bouncy, and youthful. Over time, this means more fine lines, sagging, and wrinkles.

But it doesn’t stop there...

Enter: Glycation

There’s a process called glycation, where digested sugar permanently binds to your collagen. This not only weakens your skin’s structure, but also accelerates the ageing process—leading to dullness, uneven texture, and loss of elasticity.

Even worse? Glycation can worsen common skin conditions like acne, rosacea, and even eczema.

And if you're eating a high-sugar diet over time, there's a chance you’ll develop insulin resistance. This can lead to hormonal imbalances that show up on the skin as:

• Excess hair growth (hirsutism)

• Dark patches on the neck and body folds (acanthosis nigricans)

Not exactly the glowing skin goals we’re all chasing.

So How Do You Kick the Sugar Habit (Without Losing Your Mind)?

We get it—sugar cravings are real. At Skindepth Dermatology, our current go-to fix?

Grapefruit with a sprinkle of cinnamon.

✨ The grapefruit satisfies that sweet craving without the sugar crash.
✨ The cinnamon helps balance blood sugar, fight inflammation, and even supports brain function.

Want to take it up a notch? Try it baked:

• Slice fresh grapefruit

• Add a pinch of cinnamon (and a drizzle of honey if you’re feeling cheeky)

• Bake at 180°C for 10–15 minutes

You’ll get a warm, juicy, sweet treat that’s skin-friendly and satisfying.

At Skindepth Dermatology in St Kilda East, we believe great skin starts from the inside out. Sugar might taste good in the moment—but long-term, your skin will thank you for cutting back.

Want to know more about how your diet might be affecting your skin? Book a consultation with one of our amazing dermatologists at Skindepth or speak with one of our expert dermal clinicians at our Melbourne skin clinic today.