Serena Williams is opening up about her fitness journey, revealing that she uses the injectable GLP-1 weight loss drug Zepbound, combined with consistent exercise and a healthy diet. The 23-time Grand Slam tennis champion,

Some of the losses are down to pharma's broader problems: notably, President Trump's tariff and price-cut threats. But there is also a discernible waning of investor enthusiasm around obesity treatments, amid worries about the rise of "copycat drugs" and disappointing trial results from the next generation of medicines.