Most of those reality "survival" shows are completely fake with full teams on site, campsites, makeup, emergency choppers, etc. As for the bears, in real life it's more often than not the case that bears are more scared of people than anything. Grizzly (and kodiaks in particular) are a bit more aggressive and territorial and can on occasion attack humans unprovoked, but that's rare. Black bears on the other hand are basically like giant dogs. Scream at them and scold them and they'll run away in shame. Works on Grizzlies most of the time too.
Beyond that Polar Bears are really the only super aggressive bears. They're the only ones that will actively hunt humans with little to no regard. That's because they're an apex predator and technically above us on the food chain in nature (assuming tools such as guns aren't in play.) so combine that with their infrequent encounters with humans and they treat us like they do every other potential meal.
Most of those reality "survival" shows are completely fake with full teams on site, campsites, makeup, emergency choppers, etc. As for the bears, in real life it's more often than not the case that bears are more scared of people than anything. Grizzly (and kodiaks in particular) are a bit more aggressive and territorial and can on occasion attack humans unprovoked, but that's rare. Black bears on the other hand are basically like giant dogs. Scream at them and scold them and they'll run away in shame. Works on Grizzlies most of the time too.
Here's a few examples:
https://www.youtube.com/watch?v=IiIbsNYvKl4&ab_channel=WillWild%27sOutdoorAdventures
Beyond that Polar Bears are really the only super aggressive bears. They're the only ones that will actively hunt humans with little to no regard. That's because they're an apex predator and technically above us on the food chain in nature (assuming tools such as guns aren't in play.) so combine that with their infrequent encounters with humans and they treat us like they do every other potential meal.