Mild exercise, chiropractic care and alternative therapies can relieve back pain

I thought this was a good reply from a medical physician and professor at Harvard Medical School. He first points out that acetaminophen(Tylenol) has not been shown to be effective for acute back pain. He then goes on to write "Chiropractic manipulation, acupuncture, massage or yoga provides relief for some people with acute back pain. Several studies support using these alternative/complementary therapies."

Do you think he is correct?

Mild exercise, alternative therapies can relieve back pain