Too Much Copper Is Calcifying Your Arteries
NonToxCo Research
Science & Safety Team · 4/7/2026
Your arteries are turning to stone. And copper is a key reason why.
Copper Drives Artery Calcification
A 2026 study in Ecotoxicol Environ Saf measured blood levels of five metals in 909 participants and scanned their arteries for calcification using CT imaging. Among magnesium, calcium, zinc, copper, and iron, copper was the dominant driver of coronary artery calcification (CAC).
People with the highest copper levels (≥16.6 µmol/L) had 2.13 times the risk of CAC compared to those with the lowest levels.
A Clear Threshold
Below 12.5 µmol/L of blood copper, each unit increase raised CAC risk by 50.8%. The relationship was confirmed across three different statistical models. Copper's role was consistent and dominant no matter how they analyzed the data.
Where Excess Copper Comes From
Copper pipes in your home's plumbing are a major source. Copper also shows up in supplements, some cookware, fungicides on produce, and contaminated water. Your body needs a small amount of copper, but excess levels are toxic to your cardiovascular system.
What You Can Do
Test your tap water for copper levels, especially if you have copper pipes. Run the water before drinking to flush standing water. Be cautious with copper supplements. And explore non-toxic home essentials including water filtration options.
Also see non-toxic kitchen essentials for safer alternatives.