If your mother had high blood pressure when she was pregnant, it's possible that it impacted your IQ and it may even haunt you into old age, according to the journal Neurology.

Researchers in Finland reviewed medical records, looking at the blood pressure readings from a group of pregnant women who delivered a total of 398 sons between 1934 and 1944. Each male's cognitive thinking abilities were tested at age 20, and then again around the age of 69.

Language skills, math reasoning and visual and spatial relationships were all measured. When tested as seniors, the men with mothers who had high blood pressure during pregnancy scored more than 4 points lower than those whose mothers did not have high blood pressure. The same group also scored lower at age 20. Math abilities were most affected.

The researchers believe that these cognitive declines in old age could have originated in the womb, when the majority of the development of brain structure and function occurs.