Stainless Coffee Metal Poison Are Metal Coffee Cups Healthy To Drink Out Of?

Are metal coffee cups healthy to drink out of? - stainless coffee metal poison

I was wondering if it has some of the research on health issues (if any) on the consumption of coffee mugs stainless steel. Links or sources please. I could not find. I listened to drink, because I am concerned about the possible leaching of plastic, but I prefer not to go from bad to worse.