Health Strokes to increase by 50 per cent in 30 years and nearly 10 million deaths annually by 2050: Lancet study New Delhi, Oct 10 (PTI) Strokes could kill 10 million people a year by 2050 to 9.7 million deaths per year, with annual costs as high as USD 2.3 trillion possible, unless urgent action is taken, according to a new study published October 10, 2023