Medical Clause in Lease

[Lauren Keen Aumond]

My tenants in a SFR are a retired couple, in their 70's. They signed a 1-year lease last April and have expressed interest in renewing (yay!). They want to change the lease this time to include "an escape clause in the event of needing to move because of a medical event with 60 days notice." In theory, I have no problem with this because 60 days is quite a bit of time. In reality, though, how would we define a "medical event"? Why even sign a 1-year lease if they can leave with 60 days' notice?

Any advice you can offer is appreciated. Thank you.