Scroll through social media for any length of time and it’s impossible not to notice the intense tribalism around all things nutrition.

The followers of different dietary approaches, be it vegan, keto or carnivore to name some of the most vocal and animated tribes, are engaged in relentless promotion of their chosen nutritional path and constant criticism of anything or anyone that deviates even slightly from it. Open dialogue is absent. Polarisation is rife.

James Brown, co-founder and nutrigenomics director of DNA testing company and p ...