Emergency abdominal surgery, Thermometers, Vitamins and dementia, Risk

Why more than 1 in 10 people having emergency abdominal surgery die within 30 days of their operation. Which thermometers parents should use and which they should not. Vitamins and dementia - a controversy dividing scientists. Could taking B vitamins lower the levels of the amino acid homocysteine and slow the onset of Alzheimer's disease? Absolute risk v relative risk.