Why do bananas help with heartburn?

For me at least. Tonight I got horrible horrible heart burn which rarely happens but the view times it has I can take an acid reducer, wait an hour, drink a gallon of water, eat some chia seeds….nothing will help. Usually it worsens. Literally a minute after I start eating a banana it is completely gone. This happened tonight. What property is it of the banana that gets rid of my heart burn?

My mom swears by this too and she had serious acid reflux problems until about 10 years ago when she got surgery…but no one else I’ve suggested this too has ever heard of it, or if they have, it doesn’t work for them. Thoughts?