Wound strings are wound with soft heavy metals like silver. It is susceptible to corrosion and abrasion. Especially when human sweat and skin cells are present.
They will wear out. You can prolong life by wiping the sweat off, but they will still eventually wear out.
If they were wound with a more resistant metal alloy, like cadmium, arsenic, chromium, chromium or lead, they may not be a very healthy choice.
If you have a high turnover of wound strings, first you can put in extra care to get rid of the sweat. But, you can also find a source of bulk strings, like classical guitar D strings. If you are using a new string every month, buy 12 at a time and ask for a discount. If you buy them one by one individually you will pay a lot for your strings. The specific "ukulele" low G strings are very expensive to buy individually if you are playing enough to wear them out regularly, I recommend looking at classical guitar D strings in bulk.
Or you can try a plastic low G string. I found them to be too fat for my liking. The nut needs to have a canyon carved into it to make them fit. On top of that, I have healthy hands and can just play a guitar or guitarlele if I want to get the notes lower than the open C strings. With a guitar I can (try to) play real Travis picking and actual authentic blue solos. I also have a DGBE Baritone which has the low string, and I have put in some effort to learn the chords on a DGBE instrument.