Researchers in Washington State wanted to look at what might happen before birth to increase (or decrease) a person's risk of developing MS. They compared the history of 272 people with MS to 2720 birth records of people without MS. Here is what they found:
- Having 3 older siblings cut the risk for developing MS in half
- If the mother smoked while she was pregnant, the person's risk for MS was over 3 times higher than in people whose mother did not smoke while pregnant
Clearly, we cannot influence anything that happened in our lives before we were born. Women who smoke and are considering getting pregnant can add this fact to increase their resolve to quit smoking before they conceive.
Here is a link to the abstract: Intrauterine environment and multiple sclerosis: a population-based case-control study