For several decades I’ve played competitive tennis on the cement courts in Southern California. In hindsight, being slightly bowlegged exaggerated the pressure and forces on my knees, so its not surprising that I developed knee arthritis and significant knee pain. I’m a pharmaceutical chemist, for those who don’t know me, and have a master’s degree in clinical nutrition. Unfortunately, the pain developed close to 30 years ago before I became an expert on plant chemistry and its potential benefits. Because...