Diabetes? French biochemist shares a 'hack' to eat your favorite fast food without the fear of high sugar spike

We all love fast food, it's comforting, quick, and convenient. Yet the starchy combo of burgers and fries can send blood sugar soaring, putting strain on our metabolism over time.

What if you could still enjoy your favorites, without the sharp glucose rollercoaster?Enter Jessie Inchauspé, a French biochemist known widely as the Glucose Goddess. She’s made science-backed “glucose hacks” accessible and actionable, one of the simplest being a quick dietary tweak that noticeably tames spikes.

Fast food with a twist

In a viral Instagram clip, Jessie compared two identical fast food meals: a cheeseburger with large fries on separate days.

The only variable? On one day, she began with a green salad dressed with vinegar (grabbed from the same chain). The result: a dramatically smoother glucose curve, less rise, better control.Jessie emphasizes she’s not giving permission to binge, just that adding a veggie-and-vinegar starter to your usual meal helps blunt the sugar surge. Eat like you normally eat, plus add this hack, she explains.

Why it works: Science behind the vinegar & veggie preload

The magic lies in how acetic acid, found in vinegar, slows starch digestion and encourages muscles to take up glucose more effectively.

Studies show it can reduce insulin levels by around 20% and reprogram mitochondria to burn fat more efficiently.Meanwhile, starting meals with fiber-rich veggies slows glucose absorption, creating a “protective mesh” in the digestive tract that mitigates the spike from starchy foods.

How to apply this “hack” yourself

Begin your meal with veggies first—think a simple salad or some crudités.Add vinegar, a packet from the chain, a spoonful of apple cider, rice vinegar, or white vinegar mixed into your salad dressing works great.Then enjoy the rest of your meal—burger, fries, rice, or your usual carb load.Repeat consistently when you indulge in high-starch meals, and you’ll likely notice smoother energy and fewer sugar crashes.