I'm pretty sure I know what this refers to. Meyer has cardiac issues and I would assume high blood pressure. He is most likely on meds for both. Specifically, Statins if used long enough will cause short and long term memory loss. You can also have focus and concentration issues.
I take these meds and can attest to these side effects. With that being said, I dont buy it. I think people who take these meds, myself included, may forget simple and minor things, get a timeline mixed up from several years ago, or forget the grocery shopping list, but you dont forget big events, major problems, a crisis, or an ongoing issue. Plus, Meyer is known for his preparation and attention to details.
He is using the meds part as a crutch or out. But it does shed light on Meyer's health and raises questions about his long term viability as a coach. One thing I can guarantee, this scandal and all the negative press,
will take a huge toll on him.