Tim Spector MBBS MSC FRCP MD FRSB FMedSci DSc OBE on Instagram: "Marmite might just be the most divisive food in Britain, you either love it or hate it. But did you know your opinion could be partly written in your DNA? Over twenty years ago, we ran a twin study and found identical twins were far more likely to share the same love (or loathing) of Marmite than non-identical twins, suggesting a genetic influence. But genes aren’t the whole story: early exposure plays a role in shaping your taste