Is eating beef cartilage bad for your health?
Cartilage is very tough and has no nutritional value. It isnt bad for you per se. You need to cook meat with lots of cartilage in it slowly for a long time to melt it then it's digestable.
Of course eating ice is not bad for your health--it's just water. Eating ice is bad for your teeth--it causes your teeth to grind down & grinding your teeth is bad which wears off the enamel. I had to get bone lengthening surgery from years of candy, ice chewing, grinding my teeth to put several crowns on.