A study of YouTube, TikTok, Snapchat, Instagram, and Facebook revealed that American Teens—by a large margin—use YouTube (71%) more than TikTok (58%). But they're more likely to scroll through the TikTok app "almost constantly," according to Pew Research Center polling.

The stat points to how addictive and unhealthy TikTok's endless feed of videos can be for teens.

A study from the Center for Countering Digital Hate found that new TikTok accounts were shown self-harm and eating disorder content within minutes of scrolling.

• Suicide-related videos popped up within 2.6 minutes.
• Eating disorder content popped up in 8 minutes.

Because of this, there's suddenly a roaring national debate over fears about teens' privacy, their data security—and all the misinformation going straight to their phones. Citing national security concerns, Congress is pushing to force the platform's Chinese parent company to sell TikTok or face a ban.

Psychologist Jean Twenge says. "It's of course possible that people will replace TikTok time with YouTube time or Instagram time. However, TikTok's algorithm is particularly effective at getting you to spend more time on it."