Climate change will increasingly put pressure on food production and access, especially in vulnerable regions, undermining food security and nutrition . Increases in frequency, intensity and severity of droughts, floods and heatwaves, and continued sea level rise will increase risks to food security  in vulnerable regions from moderate to high between 1.5°C and 2°C global warming level, with no or low levels of adaptation . At 2°C or higher global warming level in the mid-term, food security risks due to climate change will be more severe, leading to malnutrition and micro-nutrient deficiencies, concentrated in Sub-Saharan Africa, South Asia, Central and South America and Small Islands . Global warming will progressively weaken soil health and ecosystem services such as pollination, increase pressure from pests and diseases, and reduce marine animal biomass, undermining food productivity in many regions on land and in the ocean . At 3°C or higher global warming level in the long term, areas exposed to climate-related hazards will expand substantially compared with 2°C or lower global warming level , exacerbating regional disparity in food security risks .  
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report