Does taking part in Veganuary put people off meat in the long term? Here’s what the evidence shows

Humans have long wrestled with their conscience about killing and eating animals. The “meat paradox” (the conflict between people’s preference for meat and their concern for animals) may have inspired cave paintings from 37,000 years ago. Since then, many leading thinkers have eschewed meat, including Pythagoras, Leonardo da Vinci, Mary Shelley and Mahatma Gandhi.