According to this (sympathetic) website[0], ~4 people in the US die every year due to a lack of insulin. Meanwhile, ~40 people in the US are killed by lightning strike[1].
[0] https://rightcarealliance.org/actions/insulin/ [1] https://en.wikipedia.org/wiki/Lightning_strike#Epidemiology
One in four people who have diabetes report that they take less than they should due to cost. This has knock-on long-term health effects that can cumulate in an earlier death than would otherwise happen. Those effects will never be captured in the way that lightning strikes can be captured.
Others die who were never formally diagnosed, and so wouldn't be captured in statistics like this.
It goes on and on.
But 100,000x[0] more likely to lose a foot due to lack of insulin than by getting it cooked off by a lightning strike.
[0]Estimated. Not sure if they even track loss of limbs by lightning strikes since it's such a rare occurrence but the diabetic, poor and footless can be found in just about any major city.