A new study investigates the potential effects of a primordial black hole passing through the human body.
Tidal forces from an asteroid-mass black hole passing through the body would be localized and could damage tissue in a small area.
If a black hole passed through the head, brain cells could be torn apart due to tidal forces, potentially causing a fatality.
Shockwaves created by a black hole passing through the body could cause physical damage to cells and transfer heat energy, posing a greater risk of fatality.