"and worsen" is correct and usable in written English.
You would typically use it to describe how a situation grows worse over time. For example: "The country's economic outlook continues to worsen, as unemployment rises and the stock market tumbles."
Exact(60)
Nanotechnology could both improve and worsen environmental problems.
The group argued that the store would increase traffic and worsen pollution.
It is also a worry that is likely to linger and worsen.
These outflows undermine the rule of law, stifle trade and worsen macroeconomic conditions.
More of this bad medicine will only weaken reporting and worsen the health of our democracy.
It will intensify and worsen them," said Diego Rodriguez from Colombian group Censal.
Eye bags are partly down to genes and worsen with age.
Market-based answers might work for some problems and worsen others.
That would reduce potential American exports and worsen the current account deficit.
Traffic jams try our patience, waste our time and worsen the quality of our air.
Opponents say the project would expand production of a very dirty fossil fuel and worsen climate change.
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com