Babies should be given something sugary before a jab to reduce pain, Canadian researchers say.

加拿大研究人员称，婴儿在接受注射之前可吃食一些糖类以减轻疼痛。

Sugary solutions reduced crying time, the researchers said.

Experts at the University of Toronto say newborns are less likely to cry if given a few drops of a sugar solution（溶液） before immunisation（免疫） .

Data based on 1,000 injections suggests infants given a glucose¹（葡萄糖） solution are 20% less likely to cry following a jab.

The research, published in Archives of Disease in Childhood, is based on clinical data from 14 studies.

A team led by Dr Arne Ohlsson, of the University of Toronto, looked at data from clinical trials in babies up to a year old.

As well as the findings related to glucose, the researchers found that between a few drops and half a teaspoon²（一茶匙的量） of sucrose（蔗糖） and glucose also led to a small reduction in the amount of time a baby spent crying.

The Canadian researchers, who worked in collaboration³ with（与……合作） colleagues in Australia and Brazil, concluded: "Healthcare professionals should consider using sucrose or glucose before and during immunisation."

Existing research points to the pain-relieving properties of sweet solutions working for babies undergoing painful procedures such as a heel prick⁴.

Adam Finn, professor of paediatrics（儿科学） at the University of Bristol, said: "Anything we can do to minimise the discomfort⁵ of immunisation for children is to be welcomed, and I would like to see more research in this area.

"On the one hand parents are more likely to return if the experience is not distressing⁶.

"But more fundamentally, children don't agree to have vaccines⁷, so we need to be sure we are making it as painless as possible for them."