You should probably expect far more than that over your lifetime, but you can pretty much ignore malnutrition and war based on current data on causes of death.

You should probably expect far more than that over your lifetime, but you can pretty much ignore malnutrition and war based on current data on causes of death. Already about 1.8 people die around the world every second from all causes. That's a billion people in less than 18 years. Half of those are for people over 70. About 80% of the deaths are people 50 years and older. 30% of all deaths are from cardiovascular diseases, over 85% of all deaths are from some sort of disease. If you correlate the various diseases with age it's not unreasonable to claim "old age" as the biggest killer. Even if we gain mastery over planetary climate as an engineering solution to climate change, without tackling old age, your estimates on billions of deaths from disease should not change.