When I was teaching our staffroom had a kitchen in the corner where we could make drinks and heat food.
Many of the female teachers were hooked on redbush and other fruit teas and were quite critical of others who weren't. One of the men used to come in in the morning and make himself a cafetiere of very nice coffee. Once he was rebuked severely on health grounds by one of the 'tea ladies'.
I wondered to myself what the truth of the matter was and looked up the benefits and drawbacks of coffee. I was astounded to find how beneficial coffee was from many points of view, for example, it is a significant protection from some types of cancer, a preventative of the onset of Alzheimer's and a stimulus to physical and, especially, intellectual activity to name a few of its merits.
Sometimes I think that the advice we are given on health topic is like the Hokey Cokey, from day to day it is 'In, out, in, out, shake it all about.'
I suppose the lesson is to find information at source and be well informed, rational and sensible.
And have a coffee and a bikkie while you are looking it all up.