Swapping red meat for small fish such as anchovies, sardines and herring could reduce global disease levels and save up to 750,000 lives a year by 2050, according to a study. The benefit would be most felt in more deprived countries, the analysis found, but would also drastically cut heart disease deaths in wealthier countries, researchers suggested. The small fish, known as forage fish, are rich in nutrients with a low carbon footprint, although only about 26% of those caught are consumed by humans. The remainder, including a significant amount fished from the coasts of countries experiencing...