Does drinking soda from a can give you a bigger BPA spike than from a glass bottle?
Yes. Canned soda raises urinary BPA and short-term blood pressure more than the same drink in glass.
What's actually in it
The inside of most aluminum drink cans has a thin coating to keep the metal from reacting with the soda. That coating often contains BPA or its swap-ins like BPS. Acidic and warm sodas pull more out of the lining, so a Coke or sparkling lemonade in a hot car is the worst case.
Glass bottles don't need a liner, so the soda only touches glass and a small metal cap.
What the research says
A 2025 study in Sci Rep had volunteers drink the same soda from a can, a PET plastic bottle, and a glass bottle on different days, then tested their urine and blood pressure. Canned soda gave the biggest BPA spike and the biggest short-term blood pressure bump. PET was middle. Glass was almost flat.
The team called canned drinks an underrated daily source.
If you want a soda, pick glass-bottled when you can find it. Pour from the can into a real glass at home so the soda spends less time touching the lining. Keep canned drinks cool, never warm, and skip ones that have been sitting in a hot trunk or warehouse.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Urinary bisphenol levels and blood pressure after soda consumption from cans, PET and glass bottles. | Sci Rep | 2025 |
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