Lara Lewington

Because we're at the beginning of a real shift in how this is going to work, because things can become far more personalised, even when it comes to our activity data.

We can see through long-term patterns if there are changes.

It can recognize, are you tired or unwell?

It can see for women, the hormone tracking, being able to track by temperature and having that period tracking can be really useful because when things do change, you start to see those patterns.

And whilst they're not medical devices and you can't diagnose with them, there are lots of people who have felt something's amiss, gone to a doctor and ended up being diagnosed with something serious.

Changes can be meaningless, but they also can sometimes represent something that needs looking at.

So this ability for 24-7 data is something that's going to become increasingly useful, also built into the bigger picture of all of the other data that we can collect on ourselves.

It really is.

It's understanding what the data means.

There are a whole load of postal kits that we can all do with DNA tests, all sort of blood tests.

But we need to understand what the results really mean.

Where is the science right now?

We can all sequence our genome for a few hundred quid.

It would cost 3 billion back in 2003 to sequence the first persons.

But there are only very small elements of that that are meaningful to us right now.

And for many people, they're going to end up with pages and pages of data and be utterly confused.

But for the people where there is something important, and one expert described this to me as how we should go with the grain of the healthcare system we're in.

And that is one of the challenges.

And I wonder if we will get to a point where this all becomes more normalised, that we know so much about ourselves that we're no longer questioning whether we should know it or not.

But this is definitely an issue.