Beef is the culinary name for cattle meat (Bos taurus), rich in protein, iron, and vitamin B12, yet high consumption—especially processed—is linked to colorectal cancer and cardiovascular disease, while its production drives deforestation and emits the highest greenhouse gases of any agricultural product. Historically, humans hunted aurochs and domesticated cattle at least twice, around 10,500 years ago (Bos taurus) and 7,000 years ago (Bos indicus), making beef the third most consumed meat worldwide, with the US, Brazil, and China as leading producers as of 2018. Modern production often relies on Concentrated Animal Feeding Operations (CAFOs), which supply 70.4% of US cows but raise risks of E. coli contamination and excessive antibiotic use. The term "beef" derives from Latin bōs (unlike the Germanic "cow"), and while most cultures enjoy it, Indian religions like Hinduism prohibit it, whereas Buddhists generally avoid slaughter without a strict dietary rule. This blend of nutritional value, environmental impact, and cultural significance makes beef a uniquely complex global staple.