It's the shrapnel. When a grenade blows up, the steel body disintegrates into a multitude of tiny pieces. ... The kill radius from a grenade's explosion is about 15 feet, and the casualty radius is about 50 feet, though pieces of shrapnel can still fly much farther than that.

Can you survive a grenade?

Despite these rare instances, however, the odds of survival are extremely slim. With modern medicine, however, odds are greatly increased when compared to falling on a grenade in the 20th century.

What does a grenade do to the body?

Without body armour or protection, a single grenade can kill an individual up to 10 metres away and can cause serious injuries up to 20 metres away. Shrapnel can reach as far as 200+ metres distance from the detonation point.