A dose of sugar given as a gel rubbed into the inside of the cheek is a cheap and effective way to protect premature babies against brain damage, say experts.
Dangerously low blood sugar affects about one in 10 babies born too early. Untreated, it can cause permanent harm.
Researchers from New Zealand tested the gel therapy in 242 babies under their care and, based on the results, say it should now be a first-line treatment.
Their work is published in The Lancet.