ZOE and personalised nutrition: does the evidence on glucose tracking add up?

You might have noticed that everyone has recently become a bit
obsessed with blood sugar, or glucose. Wellness firms such as ZOE
here in the UK – as well as Nutrisense, Levels and Signos – claim
to offer insights into how our bodies process food based on
monitoring our blood glucose, among other things. But many
researchers have begun to question the science behind this. To find
out what we know about blood glucose levels and our health, and
whether the science is nailed down on personalised nutrition, Ian
Sample hears from philosopher Julian Baggini, academic dietician Dr
Nicola Guess of Oxford University and ZOE’s chief scientist, and
associate professor at Kings College London, Dr Sarah Berry. Help
support our independent journalism at theguardian.com/sciencepod