Joanna Blythman is a British investigative food journalist and writer, born in Glasgow in 1956, who has covered salmon farming, supermarkets and the causes of obesity. Her book Shopped, on the power of British supermarkets, won the Glenfiddich Food Book of the Year Award in 2005. She has also written Swallow This, which looks at the food industry's darkest secrets, along with The Food We Eat and How to Avoid GM Food.
