New scientific and anecdotal evidence indicates that the vibrations of a cat’s purr can help fight infections, reduce swelling and pain, and promote muscle growth and repair. A cat’s purr at a frequency of 18 to 35 hertz may also support tendon repair and joint mobility. At 25 to 50 hertz, purring promotes the healing of injured muscles and tendons. At 100 hertz, purring can reduce pain, increase recovery time after surgery, and ease breathing in patients with chronic pain.
Carol Lennox. LPC, M.Ed.