Climate change will pose severe risks in terms of increasing the number of undernourished people, affecting tens to hundreds of million people under High vulnerability and High warming, particularly among low- income populations in developing countries . Extreme weather events will increase risks of undernutrition even on a regional scale, via spikes in food price and reduced income  . The timing of these impacts and our ability to respond to them vary based on the level of GHG emissions and Shared Socioeconomic Pathways  .. Under a low vulnerability development pathway , climate change starts posing a moderate risk to food security above 1℃ of global warming , while beyond 2.5℃ the risk becomes high  . Under high vulnerability-high warming scenario , up to 183 million additional people are projected to become undernourished in low-income countries owing to climate change by 2050 . Climate-related changes in food availability and diet quality are estimated to result in a crude mortality rate of about 54 deaths per million people with about 2℃ warming by 2050 , most of them projected to occur in South and East Asia  . In a medium vulnerability-high warming scenario
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report