WOW! Very interesting!
If I understand what you've written...the addition of very strong coffee...and more of it has made a drastic improvement in your Father!
I never doubt discoveries that seem to work when it applies to "natural" substance...and coffee beans sure are. Here we are in a world that had beginnings of medicinal applications starting from brewing some-thing-or-other and drinking, applying, or ingesting! Every medicine we have had beginnings in natural, living cells.
I remember many years ago, when my Dad was first diagnosed with Lymphoma...he did not want to try modern conventional meds. He opted for Laitrile (peach-pits) and mega-vitamin diet that was all natural raw foods....and coffee enemas! He was already 3 years into the disease when diagnosed...and he did pass, but those last 6 months were more high quality of life than others in same situation.
I think it's interesting you took the time to pinpoint the "difference"...and also that this had been noticed by others according to the article!
Thank you for posting this...I noticed they always had a coffee-pot going in the 3 facilities my loved ones were in...I thought it was because it was a familiar thing for the clients. Perhaps you're on to something!!......Pam