Antibiotic resistance in bacteria is spreading rapidly worldwide and has even been called a global threat to humans as serious as climate change. Excessive and imprudent use of antibiotics is usually blamed, but the rate and extent of the spread can’t be explained by overuse alone.
It’s been one of the most astonishing changes in human anatomy. In just one generation, people all over the world have got a lot bigger. Although we’re also gradually getting a bit taller, the really big change has been in body fat. And while much of this is put down to lifestyle, some suggest that “obesity genes” mean it is easy for some people to gain weight and more difficult for them to lose weight