We're sad to see this one on the naughty list because its nuts look so goth and cool. But the buffalo nut tree (Pyrularia pubera), which is most commonly found in the Appalachian Mountain region ...

An older study review also found that eating tree nuts like macadamias may help reduce bad cholesterol and blood sugar levels. Macadamia nuts are also comparatively lower in carbs than other kinds ...

A nut used in herbal tea has become a hydrogel ... "You never saw the fruit from a tree expand in that kind of volume," said first author Changxu Sun, a UChicago PME Ph.D. student.