When I read this chapter today in the KJV my eyes skimmed over with nothing registering. Later when I was thinking about places where Proverbs talks about rotten bones and dried up bones I was wondering what the antidote might be. This verse came up. The verse refers back to some “it”. That means reading a few more verses.
I immediately noticed it is in the context of one of the favorite passages,
(Pro 3:5-6 KJV) Trust in the LORD with all thine heart; and lean not unto thine own understanding. In all thy ways acknowledge him, and he shall direct thy paths.Then verse 7 talks about fearing the Lord. These are recipes for neutralizing the poisons of life.
So? When you feel that you are losing it then follow that old formula of trust, acknowledge and fear. It can bring healing, physical and spiritual.