Dr Helena Marsh

I spent fifteen years as a cardiologist meeting people on the worst day of their lives. Most of what brought them to me had been measurable for a decade.

So we built the day I wished they had had. Forty-one measurements, in one house, read by the doctors who order them, not by an algorithm and a call centre.

We take six people a day. That is the number at which the radiologist still reads every scan himself, and I still have an hour for every review.

We won’t tell you how long you’ll live. Nobody can. We’ll tell you where you stand today, what is worth changing, and we’ll measure again to see if it worked.