Note that health impacts from climate change start from today's degree of global warming.
Note also crop losses to smallholders and subsistence farmers at today's warming.
The above in fact fits with an estimate by DARA that 400,000 people are being killed by global climate change per year.
These impacts are from climate change only. The assessment does not assess the combined end result impact of the many climate change stresses to population health. The assessment does not account for climate change impacting on top of ongoing health stresses and environmental degradations. The most climate vulnerable regions are where billions of the most socio-economically and nutritionally deprived live. They will suffer more end result population health damages and sooner than the climate change alone assessment finds, These billions have little health services that will collapse under small climate change impacts.
The IPCC impacts chart does not include the greatest of all dangers. These are the extreme irreversible catastrophic planetary transformations (or large scale singularities) such as multiple cascading Arctic global warming amplifying feedbacks. The science calls these low probability extreme impact effects. As reliable data is not available to model the probabilities, this group of impacts is sidelined.
Large-scale singularities are extreme, sometimes irreversible, changes in the Earth system such as abrupt cessation of the Atlantic Meridional Overturning Circulation (MOC) or melting of ice sheets in Greenland or West Antarctica (see Meehl et al., 2007; Randall et al., 2007; also Chapter 19, Section 19.3.5). With few exceptions, such events are not taken into account in socio-economic assessments of climate change. IPCC AR4 WG 2 technical report