According to a childhood study, which looked at the amount of sun exposure of mothers of 7,000 children in the last three months of pregnancy, children born in the late summer and early autumn are half a centimetre taller and have wider bones than their peers born in winter and spring.
Researchers at Bristol University have recommended that mothers expecting to give birth in the summer should take advantage of the sun's natural qualities and boost their vitamin D levels by walking around outside, and expectant mothers of winter babies should consider taking vitamin supplements.
But a study spokeswoman has warned that anyone thinking of using a sun bed for the final week would be wise to avoid it as they emit UVA light, whereas it is natural UVB rays from the sun that triggers Vitamin D.
Spokeswoman Sally Watson said: "Perhaps people shouldn't be quite so terrified of the sun. There's been a lot of panic about skin cancer, but people don't need to panic about the odd few minutes of exposure. A little controlled English sun is better than none. Or go to the Bahamas!"