A recent modeling study has predicted that due to climate change, food shortages could cost the world 500,000 extra deaths per year by 2050. The model predicted a 3 percent decrease in calories per person per day. Red meat, fruit and vegetable consumption will take the biggest hit. However, this study also finds that deaths caused by malnutrition will actually fall by 2050.

The model predicts that food availability will actually increase by 2050 even with climate change implications.  Calories per person will be up to 3008 per day from 2817 right now. While this is good that calories will grow, it is not up to the ideal level of 3106 per day that would occur without climate change.

While it seems confusing that calories AND deaths will increase, it is taking into account that the population will also be increasing. This means the extra deaths result from the predicted 3106 calories per day dropping to 3008 due to climate change. The most impacted areas will be areas with high populations that have little access to food like China and India.

I think the study was just trying to inform people that climate change would affect food supplies. Hot places will get hotter and be unable to grow crops, but cool places may actually warm up enough to grow crops. Middle latitudes will actually have weather that is more favorable.  This is a problem because some of the biggest polluters are in middle latitudes and many living in these latitudes will not see the negative effects of climate change.

Resource:

https://weather.com/health/news/climate-change-food-scarcity