You may have noticed that everyone has become a little obsessed with blood sugar, or glucose, lately. Wellness companies like 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 settled when it comes to personalised nutrition, Ian Sample hears from philosopher Julian Baggini, academic dietitian Dr Nicola Guess from the University of Oxford and ZOE’s chief scientist, and senior lecturer at Kings College London, Dr Sarah Berry
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