
By SHEILA KAPLAN and JAN HOFFMAN from NYT Health https://ift.tt/2Tc8LaU

People with diabetes who have coronary-artery bypass surgery survive about three years longer than those who have their blood vessels propped open with stents, new research shows.
One review of 15 studies involving 284 otherwise healthy subjects found that those who took melatonin before bed fell asleep 3.9 minutes faster on average and slept 13 minutes longer. Another, of 19 studies involving 1,700 people, found that melatonin users fell asleep 7 minutes faster on average and slept 8 minutes longer.
The investigators discovered that calcifications in the retina -- the thin layer of tissue that lines the back of the eye -- raise the risk of advanced age-related macular degeneration (AMD).
Bacteria from breastfeeding and from formula behave differently in babies, nrew research says.