To this day, almost all aluminum cans carrying soda are lined with a resin that inhibits the insulin signaling pathway, and is associated with Type 2 diabetes. Most of the manufacturers make claims that it's harmless. https://www.coca-colacompany.com/contact-us/faqs Despite what they say, the scientific consensus is opposite, really, with the vast majority of academic papers suggesting quite harmful effects : https:/…
I was under the impression it's all aluminium cans that need a chemical buffer to prevent aluminium from leeching into the fluids. Long term Aluminium poisoning is probably worse than diabetes since it tends to eat away at your brain. Either way I'm not particularly fond of the flavor that aluminium cans seem to impart on drinks, and have been starting to avoid them more as I get older.
There was also this fascinating study showing that BPA drove liver fat accumulation much more profoundly than fructose, which I find interesting. Both are clearly bad, but futzing with hormones is especially bad : https://ars.els-cdn.com/content/image/1-s2.0-S0300483X120036...