For about the last 10-12 years, every time
I eat a tuna fish sandwich I get ridiculous

I know from experience that it’s not the bread
or mayo causing this, so there must be some
unlisted process or additive in the Tuna.

We always buy Dolphin safe, solid pack white
albacore in water.

The label states -
“Ingredients: White tuna, water, salt,
phosphate added. Superior Quality Tuna
packed in Water”.

I have read and heard of many people
complaining about this Tuna heartburn
syndrome, but have never read any ideas
on what may cause it.

Any ideas out there?