Fat jabs slash breast cancer odds Weight loss injections could dramatically cut breast cancer deaths and reduce the risk of the disease returning, according to a major new US study. 14 May 2026 Weight loss jabs could dramatically improve survival odds for breast cancer patients and slash the chances of the disease returning, scientists claim. A person injecting Wegovy Researchers led by Kristina Tatum, from Virginia Commonwealth University, found women using blockbuster GLP-1 slimming injections were up to 65 per cent less likely to die from any cause over a 10-year period.