Revisited: 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
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. In this episode from
July, Ian Sample talks to the philosopher Julian Baggini, the
University of Oxford academic dietician Dr Nicola Guess, and Zoe’s
chief scientist the King’s College London nutrition expert Prof
Sarah Berry to find out what we know about blood glucose levels and
our health, and whether the science is nailed down on personalised
nutrition. Help support our independent journalism at
theguardian.com/sciencepod