A study has claimed that couples who rush to get pregnant within two years of giving birth are 50 percent more likely to have a child with autism.
The new CDC study also says a gap of more than four years is just as risky.
The study was published in the journal Autism Research.
The researchers came to those conclusions after assessing hundreds of US babies with developmental disorders.
Women, according to the authors, need at least 18 months to regain the healthy level of nutrients needed to carry and nourish a baby.
And fortunately those who waited longer than the average tended to have fertility issues.
The research lent credence to current guidelines which advise waiting more than 18 months to conceive again to avoid premature births, low birth weight and placental abruption.