system
Given the following post, respond as if you're commenting on Reddit:
human
(Eli5) Is it true that people with joint diseases like arthritis can “feel” the weather? If so, what mechanisms are at work to cause that?
gpt
When you watch the weather reports with the map, you can see the high/low pressure areas moving around. These can be measured locally with a device called a barometer. Very broadly speaking, low pressure areas bring in "bad" weather.

Now, if your body were a little on the sensitive side, your aches might make you something of a human barometer. Certainly not as good as the machine, but if it sets in relatively quickly, you'll notice it in ways other people might not unless they check the barometer a lot, and notice the needle moving.