Joanna Blythman writes food journalism and consumer non-fiction about ingredients, supermarkets, food processing and the practical consequences of how modern food is produced. What to Eat works as a shopping-oriented guide to choosing meat, fish, dairy, fruit, vegetables and packaged foods, while Swallow This investigates the industrial techniques, additives and manufacturing shortcuts that can sit behind apparently ordinary processed products. Other books address supermarket power, seasonal eating and the difference between marketing language and how food is actually made. Blythman's style is direct, sceptical and practical, using reporting and product examples rather than nutritional theory alone. Her work fits food writing, consumer affairs and food-industry investigation. Swallow This is the stronger choice for readers interested in ultra-processed food and manufacturing practices; What to Eat is broader and more useful as a category-by-category reference for everyday food shopping. Read more Less