Scientists Discover Why Suffocation Causes Fear

Around 5% of people are claustrophobic, fearing tight spaces and restricted movements. One of the major sources of fear by claustrophobics is the fear of suffocating. As it turns out, suffocating is downright terrifying all by itself, and it's not just the overall fear of death kicking in: according to new research published in Cell, decreases in CO2 can actually induce fear via pH levels in our brains. read more

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