Researchers have hypothesized that people with lower IQs may have a higher risk of adult mental disorders, but few studies have looked at the relationship between low childhood IQ and psychiatric disorders later in life.

Since the Fluoride Action Network (FAN) first issued a statement in August 2007 calling for an end to fluoridation, over 1300 additional professionals signed on as even more evidence emerges to condemn fluoridation. Also, 53 cities rejected fluoridation on election day.

Fluoride added to public water supplies is detrimental to your health.

World experts in iodine deficiency today urged renewed international commitment to help prevent loss of IQ due to fetal brain damage by facilitating access to iodized salt for the final 30 percent of world households that don’t yet have it – most of them found in just 20 countries.

The known association between breast feeding and slightly higher IQ in children has been shown to relate to a particular gene in the babies, according to a report this week in the Proceedings of the National Academy of Sciences.

A history of maternal epilepsy and its associated treatment may be linked to impaired intelligence later in life, says a new study published in Epilepsia. Dr. Nina Oyen, M.D., of the University of Bergen and Norwegian Institute of Public Health, Bergen, Norway, investigated the I.Q. levels of sons born to mothers with and without epilepsy, and found a correlation between intelligence and the illness.

How many simple objects can you think about at once? Even though people feel they have rich visual experiences, researchers have found that the average person is only aware of about four items at a time.

Assuming someone gave you the choice of 100 euros today or 150 euros in a year's time. Which sum would you take? Scientists at the University of Bonn and the Institute for the Study of Labour (Institut zur Zukunft der Arbeit, IZA) asked 1000 adults in Germany this question.