What are some problems that were once considered "first world problems" that have now become "global problems"?

One thing that comes to mind for me is obesity. Growing up I'd always here about how "people in the US (or the West) are dying of obesity while people in Africa and India are starving to death"

Well that was 2005; this is 2022 and now more people die of obesity related problems than malnutrition worldwide.

What are some problems that were once considered "first world problems" that have now become "global problems"?
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