What potent neurotoxin found in carambola can accumulate to dangerous levels in individuals with impaired kidney function?

Answer

Caramboxin

Caramboxin is a potent neurotoxin present in star fruit; healthy kidneys filter it harmlessly, but it accumulates in those with compromised kidney function, leading to severe neurological symptoms.

What potent neurotoxin found in carambola can accumulate to dangerous levels in individuals with impaired kidney function?
healthfruitbenefitstar fruit