Eat less red meat and cycle more for your and the planet's health

Experts say lifestyle changes can cut emissions and diseases globally as a major study shows climate change is undermining five decades of progress in health

High-carbon lifestyles are desperately unhealthy, according to Hugh Montgomery, director of the UCL Institute for human health and performance and co-chair of the Lancet commission.

Cutting red meat and dairy consumption would lead to a big saving in methane, which is 23 times as potent a greenhouse gas as carbon dioxide "from essentially belching cows. That saves a lot of strokes, heart disease, bowel cancer and so forth," he said.