Chart: What your birth month means for your risk of disease

Astrology may be bunk, but when it comes to your health, “your sign” can matter more than you think. The month that babies are born in has a connection with the diseases they are likely to develop in their lifetimes, according to a rigorous new scientific study.

Mary Regina Boland, Nicholas Tatonetti and other researchers at the Columbia University Department of Medicine examined records for an incredible 1.75 million patients born between 1900 and 2000 who had been treated at Columbia University Medical Center. Using statistical analysis, they combed through 1,688 different diseases and found 55 that had a correlation with birth month, including ADHD, reproductive performance, asthma, eye sight and ear infections.

Overall, the researchers found that being born in June, August, January and December provided no big advantage or disadvantage when it came to disease. Other months, such as October and November, were associated with increased risk of disease, while months like February, March, April, May and July tended to be associated with decreased disease risk.

For respiratory, reproductive and neurological illnesses, people born in the early winter (October and November) were more at risk. For cardiovascular disease, those born in the fall (September through December) were more protected, while those born in winter and spring (January to June) had higher risk, as the charts above show.

The researchers emphasize that other environmental factors, like diet, medical care and exercise, are more likely to influence whether you get a disease. And since these numbers are culled from New York City and influenced by the local climate, they may not be applicable to babies born in other places.

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