Common chemical in mothers may negatively affect the IQ of their unborn children

In some women abnormally high levels of a common and pervasive chemical may lead to adverse effects in their offspring. The study, published recently in the Journal of Clinical Endocrinology & Metabolism, is the first of its kind to shed light on the possible harmful side effects of perchlorate in mothers and their children.

Using data from the Controlled Antenatal Thyroid Study (CATS) cohort, researchers at Boston University School of Medicine (BUSM) and Cardiff University studied the effect of perchlorate, an environmental contaminant found in many foods and in some drinking water supplies, and its effects on children born to mothers with above average levels of this substance in their system. They studied 487 mother-child pairs from with underactive thyroid glands and in the 50 women with the highest levels of perchlorate in their body, their had below average IQ levels when compared to other children.

"The reason people really care about perchlorate is because it is ubiquitous. It's everywhere," said Elizabeth Pearce, MD, MSc, associate professor of medicine at BUSM. "Prior studies have already shown perchlorate, at low levels, can be found in each and every one of us."

Perchlorate is a compound known to affect the thyroid gland, an organ needed to help regulate hormone levels in humans. According to Pearce previous studies have attempted to implicate this anti-thyroid activity in pregnant mothers as a possible cause of hypothyroidism, or an underactive thyroid gland. Hypothyroidism in newborns and children can lead to an array of unwelcome side effects, including below average intelligence.

add to favorites email to friend print save as pdf

Related Stories

Thyroid conditions raise risk of pregnancy complications

May 29, 2013

Pregnant women who have thyroid disorders face greater risk of preterm birth and other complications that have short- and long-term consequences for the health of mother and child, according to a recent study accepted for ...

Recommended for you

Testosterone testing has increased in recent years

13 hours ago

(HealthDay)—There has been a recent increase in the rate of testosterone testing, with more testing seen in men with comorbidities associated with hypogonadism, according to research published online Nov. ...

AMA: Hospital staff should consider impact of CMS rule

23 hours ago

(HealthDay)—Hospital medical staff members need to consider the impact of a final rule issued by the Centers for Medicare & Medicaid Services (CMS) that revised the conditions of participation for hospitals ...

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.