科學(xué)家發(fā)現(xiàn)，孕婦補充復(fù)合維他命可以有效降低產(chǎn)生低重嬰兒的幾率
A recent study in Tanzania found that when pregnant women took vitamins every day, fewer babies were born too small. Babies that weigh less than two and one-half kilograms at birth have a greater risk of dying. Those that survive are more likely to experience problems with their developmen…