I think that getting older means bugs and problems take longer to shake. Oh for the Grandson's constitution! That there Covid 19 made him feel slightly off-colour for a whole morning in the pandemic.
As for food security, the most worrying thing is the lack of preparedness of our government. They seem oblivious to the potential problem not so far down the road.
Our just-in-time supply lines are very short, which is good practice for a business but if things go wrong we could be in a mess in a couple of weeks. On the other hand, I don't want to be known as that chap who keeps ranting 'the end is nigh!'
At the moment our personal stocks are low - we've nearly used up the 2020 dried milk we got in case the plague became serious.