[GRBLDeveloped]

https://en.wikipedia.org/wiki/IARC_group_2B

I read through this list before when I was talking to a conspiracy theorist about 5G. Radio frequencies are on this list. As are caffeic acid (found in coffee, wine, mint), aloe vera and pickled vegetables.

[LegitShady]

Caffeic acid may be a carcinogen but I do not think any decent studies have found a connection between drinking coffee and cancer, and in fact some have found the opposite.

[codr7]

A bigger problem is likely caffeine inhibiting uptake of vitamin D and disrupting sleep.

[tacocataco]

Plus stress and high cortisol levels from burnout.