If your protein powder tastes like dessert, it may be behaving like one in your body.
I was surprised to learn that many protein powders on the market today are sweetened with sugar, corn syrup solids, or artificial sweeteners. They may look healthy on the label, but inside your body, they can quietly drive insulin up, making fat loss harder, cravings stronger, and energy more unpredictable.
That’s not what protein is supposed to do.
Protein should steady your blood sugar, keep you full, support your muscles, and help your metabolism work better. Not fight against you.
Why This Matters More After 40
Here’s the part most of us were never warned about.
After about age 40, your body just doesn’t handle blood sugar the way it used to. Insulin hangs around longer. Muscle is harder to keep. And weight is easier to gain and harder to lose — even when you feel like you’re doing everything “right.” Just take a look at your blood work. Have your blood sugar numbers been creeping up year after year? Do you know your fasting blood sugar level?
That’s why so many women feel frustrated.
And it’s also why so many protein powders quietly backfire. Highly processed powders are often stripped of their natural structure and filled with ingredients your body doesn’t really recognize as food. The result can be bloating, blood sugar swings, and that stuck, sluggish feeling so many women complain about.
As published in Food Science and Biotechnology (Jan 2023), “Research shows that whey protein processed with minimal heat — often called native or cold-filtered whey — can retain more of its natural structure and be better utilized by the body than whey that has been exposed to high heat during manufacturing. Studies comparing minimally processed whey with heat-treated whey found higher bioavailability and stronger markers of muscle protein synthesis in the less-processed form. This supports the idea that how whey is processed can affect how well your body digests and uses the protein — which is especially important if you’re focused on steady metabolism, muscle support, and stable blood sugar.”
The Processing Problem That Can Spike Your Insulin Without You Knowing
It might surprise you to learn that many protein powders on the market today aren’t just over-processed — they’re actually denatured. That means the protein has been damaged by high heat during manufacturing. When whey is heat-treated, its structure changes, and your body no longer responds to it the same way. In fact, denatured whey is one of the biggest insulin-spiking proteins on the market — and it has nothing to do with sugar. It’s the processing. That’s why UNI KEY’s whey is cold-filtered and never heat-treated. The protein stays intact, your body recognizes it as real food, and your blood sugar stays steady.
What I Look for in a Protein
This is exactly why I’m so particular about protein.
UNI KEY’s Whey Protein is made with clean, carefully sourced whey that hasn’t been over-processed. Your body knows what to do with it. It digests easily. It keeps blood sugar steady. And it gives you real, usable energy — the kind that lasts.
Each serving provides:
- 21 grams of cold-filtered, hormone-free whey protein (never de-natured)
- Naturally occurring immune compounds like lactoferrin and immunoglobulins
- Gentle sweetness from monk fruit and prebiotic inulin for easy digestion
No sugar spikes.
No chemical aftertaste.
No crash an hour later.
Just real nourishment your body can use.
>> Shop Fat Flush Whey Protein
P.S. In my new Fat Flush Reboot, I show you exactly how to use this whey protein in everyday recipes — from Raspberry Cookies and Mock Bread Pudding to my Super Recovery Smoothie. It’s one of my favorite ways to make healthy eating both easy and delicious.
Resources Include:
Kim J, Jeong EW, Baek Y, Go GW, Lee HG. Comparison of the effects of commercial whey protein and native whey protein on muscle strength and muscle protein synthesis in rats. Food Sci Biotechnol. 2023 Jan 30;32(3):381-388. doi: 10.1007/s10068-023-01248-7. PMID: 36778088; PMCID: PMC9905349.
