Almost lost my father this week. He's in his 80's. He got a sore throat, had a hard time swallowing, didn't eat or drink enough and lost 22 pounds in 10 days. With the daily temp creeping up abopve 100 each day for the last week, he should not have been working in his garden. Fortunately, we got him to the hospital in time to get him on the track to recovery. The attending physician said he was possibly hours away from not being able to be brought back. So, if you're fortunate enough to have parents that are still around, and they live in high heat areas, it might be worth checking in on them more than once a week. (I live some distacne from them, and do it via phone).