no.mind@the_no_mind
Your banana from Ecuador has more deuterium than an apple grown in Hungary.
This isn't a small difference.
It's built into the biology of where the plant grows.
Gábor Somlyai, molecular biologist & cancer researcher:
"In the equatorial area, rain deuterium concentration is 155 ppm. As we go toward the poles, surface water deuterium decreases."
Tropical fruits grow in high-deuterium water.
They carry that load into your cells.
But it goes deeper than geography.
Plants fix carbon dioxide through different pathways — C3, C4, and CAM.
C3 plants (wheat, spinach) deplete deuterium more. Lower load.
C4 plants (corn, sugar cane) sit closer to 150 ppm. Higher load.
CAM plants — like pineapple — can actually concentrate deuterium above ambient levels.
So pineapple isn't just tropical.
It's actively accumulating deuterium through its own metabolism.
Human populations evolved eating the food grown in their region — drinking the water of their latitude.
That food matched their biology.
Today someone in Norway eats bananas from Ecuador, oranges from Spain, pineapple from Costa Rica.
Every one of those choices shifts the average deuterium burden upward.
Eat local. Eat seasonal. Match food to the geography your biology evolved in.
Not complicated in principle.
Just largely ignored.