* Nipple-piercing may give women more than just a bit of soreness. A few weeks after being pierced, one healthy, non-pregnant 20-year-old spontaneously produced breastmilk from both nipples. Doctors discovered that this was not a local reaction, but due to a 'dramatic increase' in prolactin, the hormone that is normally produced during pregnancy (N Engl J Med, 2002; 347: 1626).
* The usual preventative treatment after a heart attack is angioplasty. This is where a catheter is inserted into the arteries to break down and remove blockages. A less invasive technique has been found to be just as effective, and works by dissolving the blockages (Lancet, 2002; 360: 825-9).
* Doctors have never understood why certain women regularly miscarry in pregnancy. But now there's a clue. It's been found that miscarrying women have a tendency to 'insulin resistance' - in other words, an inability to transform glucose into energy (Fertil Steril, 2002; 78: 487-90).