Sixty-six percent. That’s how many Gen Z investors told Betterment they’re betting on sports, and if that number doesn’t stop you in your tracks, I don’t know what will. We’re not talking about a few friends tossing twenty bucks into a March Madness pool anymore. We’re talking about a generation that’s grown up with a sportsbook app sitting right next to their banking app, their Venmo, their everything, and apparently they’re using all three in roughly the same way.

Okay, So How Did We Get Here

Let’s rewind. Back in 2018, the Supreme Court cleared the way for states to legalize sports betting, and since then it’s spread to 30 states like wildfire. That’s the first domino. The second one, and honestly the one that’s been flying under the radar, is prediction markets. Starting in early 2025, platforms rolled out sports-related event contracts that they insist are financial trades, not bets. Semantics, maybe, but it’s a semantic trick that’s done a lot of heavy lifting, because it opened the door to states without legal sportsbooks and, this is the part that should make you sit up, to people under 21.

Think about that for a second. We spent decades building age gates around gambling for good reason, and now there’s a workaround that’s basically “well technically it’s a trade” standing in the way. I’m not saying that’s illegal. I’m saying it’s a loophole big enough to drive a truck through, and a lot of teenagers have apparently found the keys.

The World Cup Was a Tipping Point

Here’s a stat that actually floored me: Bank of America Institute found that in July, during the height of the 2026 FIFA World Cup, Gen Z made up almost half of all online betting activity. Half. They outnumbered millennials for the first time ever. Not gonna lie, I had to read that twice. Millennials basically grew up alongside the legalization of sports betting, they were supposed to be the generation that normalized it. And now they’ve already been overtaken by kids who, in some cases, aren’t even old enough to legally order a beer at the bar where the game’s playing.

Is This Just… Normal Now?

According to Cynthia Grant, that might actually be the scariest part. She’s the vice president of clinical at Birches Health, which runs online therapy specifically for gambling addiction recovery, and she put it in a way that stuck with me.

“It is more unusual for someone not to have, for example, a Kalshi account, DraftKings… than it is,” Grant said. “It’s part of the experience of watching sports now.”

Read that again. It’s not unusual to have a betting account anymore, it’s unusual not to. That’s a complete flip from where things stood even ten years ago, and it happened fast. Really fast. We’re talking about a cultural shift that normally takes a generation or two to settle in, and it basically happened over the span of one World Cup summer.

Why Experts Are Actually Worried

Here’s the thing people keep missing when they talk about this like it’s just a fun quirk of modern sports fandom: betting apps are designed, deliberately, to feel like games. Push notifications, cash-back offers, live odds that update every few seconds while you’re watching the match, little dopamine hits built right into the interface. That’s not an accident. That’s product design. And when you hand that kind of engineered-for-engagement tool to a generation that’s already glued to their phones from the moment they wake up, you’re basically running an experiment in real time on how fast habit turns into dependency.

And look, I get the appeal. Betting on a game you’re already watching makes the game more interesting. I’ve felt that pull myself, watching a random Tuesday night game become must-see TV because I’ve got ten bucks riding on the under. The problem is when “a little more interesting” turns into checking your account between every play, or chasing a loss you took in the third quarter with a bigger one in the fourth.

What’s interesting here is that clinicians like Grant aren’t treating this as a hypothetical future problem. They’re treating it as something that’s already showing up in their practice, right now, with young clients who got started not because they were degenerate gamblers but because, well, that’s just what you do when you watch sports these days. The behavior got normalized before the guardrails caught up. That’s a pattern we’ve seen before, frankly, with social media, with vaping, with a dozen other things marketed hard at young people before anyone fully understood the downstream effects.

What This Actually Means

I don’t think Gen Z is uniquely reckless or uniquely vulnerable here. I think they’re the first generation to come of age with gambling fully integrated into the entertainment experience, no friction, no stigma, just an app sitting on the home screen next to Instagram. That’s a genuinely different environment than any previous generation grew up in, and it’s going to take more than a few surveys to understand what it does to people over the long haul.

What I do know is this: when the experts sounding the alarm are the clinicians treating the fallout, not politicians or pundits, that’s usually a sign the problem is already bigger than the headlines suggest. The question nobody’s really answered yet is what happens to this generation ten years from now, after a decade of odds flashing on their screen every time they just wanted to watch a game.