The claim that energy drinks can cause cancer is misleading/exaggerated. Although energy drinks and other sugary drinks can be positively associated with an increased risk of cancer, this doesn’t mean that they will directly cause cancer. Many studies show that overly-sugary drinks show an increase in colon cancer, but again, this does not mean there is direct causation of the disease.
Government Study Page: This study concludes that the consumption of sugary drinks was positively associated with the risk of overall cancer and breast cancer. In the original source, their study showed that those with higher intake of energy drinks and sugary drinks were also associated with higher risk of the disease.
This claim is extremely misleading because energy drinks are not the direct cause of cancer. It is, however, partly true because energy drinks are positively associated with an increased risk of cancer. Energy drinks don’t cause cancer, but they do put you at an increased risk of having it.
https://pmc.ncbi.nlm.nih.gov/articles/PMC6614796/