Skiing
People don't talk about how frequently skiers get hurt. Don't let this dissuade you from wanting to go on that winter trip to Alaska. Just remember to wear a helmet, don't put yourself in a position where you could get seriously hurt, and you'll be just fine.
Falling at Breakneck Speeds
Skiers regularly get hospitalized for crashing into trees and other skiers, getting trapped in avalanches, collapsing into snowbanks, and other falling related situations. Last year, 42 skiers died because of their skiing accidents. While this doesn't make skiing even close to the most dangerous sport out there, it's cause for concern.