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Don’t bother telling a scrooge to cheer up…He was born that way.

A study conducted by Vanderbilt University reveals that grumpy people’s brains are wired to make them grouchier than other folks…

It stems from a portion of the brain called the ventromedial prefrontal cortex. And the more activity in that area, the more likely a person is to be a grump…It’s also the part of the brain that controls sweating, stomach acidity, heart rate and other physical feelings associated with stress and bad moods.