If you’ve ever scanned a food label, you’ve probably seen “sodium phosphate” or “phosphoric acid.”
These phosphorus-based additives are in everything from soft drinks to processed cheese.
And according to a new study in the Clinical Journal of the American Society of Nephrology, cutting back on them could do big things for your chronic kidney disease (CKD).
Phosphorus is a mineral your body needs.
But the form added to processed foods — inorganic phosphate — gets absorbed too quickly into the bloodstream.
That’s especially dangerous for people with CKD, who already struggle to regulate phosphorus.
High phosphorus levels are linked to kidney damage, heart problems, bone weakness, and inflammation.
But until now, scientists weren’t sure how much simply reducing additives could help.
Researchers at the University of Alabama at Birmingham ran an 8-week feeding study to find out.
They followed 50 people: 39 healthy adults and 11 with CKD.
Everyone ate a high-phosphorus-additive diet for two weeks, then switched to the exact same meals — minus the additives — for six weeks.
The only difference was the presence of those food additives.
Researchers tracked blood and urine changes, focusing on fibroblast growth factor 23 (FGF23) — a hormone tied to phosphorus balance, inflammation, and organ damage.
Here’s what they found:
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1. Phosphorus in urine dropped 30% in both groups, showing just how much more gets absorbed when additives are involved.
2. In CKD patients, FGF23 dropped 25% and parathyroid hormone (PTH) dropped 20%.
3. In healthy adults, FGF23 dropped 22% — but only in White participants. The sample size was too small to draw conclusions for others.
4. In healthy people, PTH stayed the same. But again, CKD patients saw a 20% drop.
Bottom line: removing phosphorus additives reduces your phosphorus load and lowers harmful hormone levels, helping prevent more kidney and heart damage.
To do this yourself:
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● Cook more at home using fresh produce, plain meats, fish, unprocessed dairy, and whole grains.
● When buying packaged food, scan the label and skip anything with “phosphate” or “phosphoric” listed.
Your kidneys can recover — but not from food labels alone.
Learn the simple changes that reversed CKD for thousands of readers. It’s all explained here…