Apple has just kicked off a massive health research project. It's not like anything they've done before. This time, they're not focusing on just one area of health. Instead, they're gathering data from iPhones, Apple Watches, and AirPods to find new links between different aspects of our health, both physical and mental.

This isn't just about learning new things. Apple has a history of turning research into real features. Remember the hearing test in AirPods? That came straight from their health research.

Privacy is a big deal here. Apple says users will be in control. They can choose to join in and decide what data to share.

The study will be available in the Research app and is teaming up with Brigham and Women’s Hospital, part of Harvard Medical School. Users who join will share their data and answer questions about their daily lives and habits. The study will cover a lot of ground, including activity, aging, heart health, mobility, and more. It's set to run for about five years, but it could go on longer.

The scope of this study is huge. Apple's first health study had 400, 000 participants. Traditional studies usually have much smaller groups. This big scale could lead to new discoveries. But it's also a bit of a mystery what will come out of it.

Calum MacRae, a cardiologist at Harvard Medical School, is leading the study. He thinks this broad approach could speed up discoveries. Traditional research often takes a long time to show results because it's focused on specific goals. This study, with its diverse group of participants, could change that.

MacRae also hopes this study will help fill in gaps in our knowledge. Traditional studies often have limited participants, which can miss important information. This study could help include more diverse groups, like women, children, and older adults.

Apple's previous health studies have already led to new features. For example, the hearing test in AirPods came from their research. Desai, Apple’s vice president of health, said it might be a few years before we see new features from this study. Product development can take a while, and this study is just getting started.

One exciting possibility is that the study could lead to more proactive features. For instance, detecting early changes in hearing could help reduce the risk of cognitive decline later on. Desai also mentioned that these features might not be limited to hardware. Software like Focus modes could also play a role.

Apple's Big Health Bet: What's Next for Your iPhone and Watch?

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