By the way, doctor: Is it safe to take high doses of vitamin D?

On the basis of a blood test, my doctor wants me to take high doses of vitamin D for three months. I hear there are wide variations among laboratories performing these tests. Should I trust my first results, or take the test again? What are the risks?

Content restricted. Requires subscription

In the journals: Radio wave treatment is effective against Barrett’s esophagus

Barrett’s esophagus occurs when cells lining the lower esophagus are replaced by intestinal cells brought up by acid reflux. A new technique uses radio waves from an electromagnetic coil to kill the affected cells while leaving healthy cells undamaged.

Content restricted. Requires subscription