Can drinking soda from aluminum cans raise your bisphenol levels and blood pressure?

What's actually in it

Aluminum soda cans have a thin plastic lining on the inside to keep the metal from reacting with the drink. That lining often contains bisphenol A (BPA) or its replacements like bisphenol S (BPS). These chemicals can leach from the lining into the soda, especially in acidic drinks like cola or citrus flavors.

Bisphenols are endocrine disruptors. They mimic estrogen in the body and have been linked to heart problems, metabolic issues, and reproductive effects. Even at very low doses, they can affect how your hormones work.

What the research says

A 2025 study in Sci Rep gave people the same soda in three different containers: aluminum cans, PET plastic bottles, and glass bottles. Then the researchers measured bisphenol levels in their urine and tracked their blood pressure.

People who drank from cans had the highest bisphenol levels in their urine. Glass bottles produced the lowest levels. PET bottles fell somewhere in between. The differences showed up within hours of drinking.

The study also found that higher bisphenol levels correlated with higher blood pressure readings. The effect was small but measurable, and it happened quickly after drinking. For someone who drinks canned soda daily, these small spikes could add up over time.

Choosing glass bottles over cans is the simplest way to cut your bisphenol exposure from drinks. If glass isn't an option, PET bottles are still a step down from cans for bisphenol exposure.