"Was it Covid? Or was it the coronary artery disease, or stage five diabetes, or cancer, or COPD, etc., etc."
I've been type 1 diabetic(insulin dependent) for over 40 years (diagnosed when I was 18 in high school). Never heard of stage 5 diabetes, so googled it. Learn something new every day. Based on the linked article #1 below,I'd say I was stage 5 that January day when I was diagnosed. The Doc's first call was to the Joslin Clinic in Boston- no vacancies. I ended up going west 20 miles to a central MA hospital and spent a week in intensive care. I was ketotic well before(weeks likely) I arrived.
Doctors are beginning to believe that covid increases blood sugar levels(blood sugar is what gets out of whack in diabetics, and must be controlled via insulin injections, or oral medication(though some with type 2 also take some insulin. Type 1 diabetics produce zero insulin- was a guaranteed death sentence til Banting and Best). Covid seems to increase blood sugar levels in non-diabetics- at least some, putting them in the diabetic category.
I emailed Dr. Fauci in late March suggesting there might be a relationship between covid and blood sugar levels. I had read back then that some of the hardest hit were the elderly and diabetics. Made me wonder what happens to blood sugar levels as one ages. Went ro clinicaltrials and searched it...Bingo, blood sugar goes up as one ages, often. See link #3 below entitled Effect of Aging on A1C Levels in Individuals Without Diabetes. Note the term A1c referenced represents the 3 month average of a persons blood sugar level.
In my view, most of those with coronary artery disease, or stage five diabetes, or cancer, or COPD, etc., etc. would still be alive today if not for covid, That also includes overweight individuals who have succumbed to covid, and whose blood sugar levels may not have been defined as diabetic, but covid tipped the scales and unleashed cytokine storm.