Tim Spector

Timothy David Spector (born July 1958) is a British epidemiologist and science writer.
Biography.
Spector is professor of genetic epidemiology and director of the TwinsUK registry at King's College, London. He is a specialist in twin studies, genetics, epigenetics, and microbiome and diet.
He was appointed Officer of the Order of the British Empire (OBE) in the 2020 Birthday Honours for services to the Covid-19 response.
"The Diet Myth".
Spector authored "The Diet Myth: The Real Science Behind What We Eat" in 2015. The book explains how gut microbiotas interact with different dietary habits and how the gut microbiome can determine health and longevity. It received positive reviews in science journals. Spector argues for a diet that increases gut microbe diversity. To do this he recommends increasing fibre content, avoiding junk and processed foods and experimenting with different fresh foods.
Spector has argued against low-fat and fad diets. He recommends a varied high-fibre Mediterranean-style diet with plenty of nuts and vegetables.