Navigation Links
Some racial disparities in childbirth more environmental than genetic
Date:3/13/2014

A new study investigating racial disparities in birth outcomes shows that contrary to some theories Vitamin D is unlikely to play a role in differences in preterm birth and low birth weight between African-Americans and whites.

"For years there has been this hypothesis that African-Americans have worse birth outcomes because they have more melanin in their skin which reflects the sun and therefore lowers levels of Vitamin D," said study author Zaneta Thayer, PhD, assistant professor of anthropology at the University of Colorado Denver . "But in examining the relationship between ultraviolet exposure and birth outcomes nationwide, there was no evidence to support this."

The study was published in the American Journal of Epidemiology.

The so-called ultraviolet light or UVD theory holds that racial differences in health outcomes between blacks and whites are associated with the ability to synthesize Vitamin D from ultraviolet light. African-Americans, who have high concentrations of melanin, are less able to absorb Vitamin D from the sun leading some to believe that this contributes to higher rates of negative birth outcomes.

A lack of Vitamin D has been linked to increased risk of pregnancy complications, bone disorders, cardiovascular disease, diabetes and some cancers.

At the same time, differences in socioeconomic status and racial discrimination have also been linked to low birth weights, risk of depression and other ailments.

Thayer collected data on UV exposure in 48 states or territories, using information compiled from the National Oceanic and Atmospheric Administration (NOAA) National Weather Service website. She also used birth outcome data came from the National Centers for Disease Control and Prevention, focusing specifically on incidences of low birth weight and preterm births.

The study found that states with the highest income inequalities had higher disparities in birth outcomes across the UV spectrum.

The racial disparity in low birth weight was greatest among women living in areas with high UV exposure and greater income inequality. The disparity in preterm births was also highest in areas with increased UV exposure and income inequality.

According to the UVD hypothesis, the difference in birth outcomes between whites and blacks should be lower among women in areas with more sunshine or UV radiation. In fact, there was an increase in disparities in those areas.

"Given the UV hypothesis, we would expect that women who live in the South would have better birth outcomes than those living in the North," Thayer said. "However, the present analysis suggests the exact opposite, with both absolute rates as well as racial disparities in adverse birth outcomes being greatest in southern states."

In fact, the states with the lowest disparities in preterm and low birth weights were North Dakota and Vermont which had the second and third lowest UV Indexes respectively.

"The results suggest that the environment is a stronger contributor to adverse birth outcomes than genes, since there are differences in rates of birth outcomes across states" Thayer said. "That said, it seems unlikely that disparities in birth outcomes in the U.S. are primarily shaped by differences in UV induced vitamin D status."

Thayer said it might be time to stop looking at genes as the primary cause of racial differences.

"We need to focus on addressing structural inequalities in society like poverty and discrimination that shape individual experience and health," she said.


'/>"/>

Contact: Dan Meyers
dan.meyers@ucdenver.edu
University of Colorado Denver
Source:Eurekalert

Related medicine news :

1. Potential biological factor contributing to racial disparities in prostate cancer
2. Wayne State to study role of microRNAs in prostate cancer racial disparities
3. Genetic Difference in Blood Clotting Mechanism Could Explain Some of the Racial Disparity in Heart Disease
4. Deaths from pancreatic cancer rise, fall along racial lines
5. Deaths from pancreatic cancer rise, fall among racial lines
6. Racial difference in blood clotting warrants a closer look at heart attack medications
7. Considerable gender, racial and sexuality differences in attitudes toward bisexuality
8. Racial and ethnic disparities exist in ER pain management for children with abdominal pain
9. LSUHSC study reports racial/ethnic differences in young people with cancer
10. Research finds racial/ethnic disparities in health care among older male cancer survivors
11. Study finds racial and ethnic disparities in usage of specialty services for children with autism
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... Pixel Film ... Pro X. , "Film editors can give their videos a whole new perspective by ... Austin - CEO of Pixel Film Studios. , ProSlice Levels contains over 30 ...
(Date:6/26/2016)... ... , ... Brent Kasmer, a legally blind and certified personal trainer is helping to develop a ... fitness app plans to fix the two major problems leading the fitness industry today:, ... type program , They don’t eliminate all the reasons people quit their exercise ...
(Date:6/25/2016)... ... 25, 2016 , ... Experts from the American Institutes for ... Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. , AIR ... care planning, healthcare costs and patient and family engagement. , AIR researchers will ...
(Date:6/25/2016)... ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library on June 21 due ... up a new, often overlooked aspect of head lice: the parasite’s ability to live away ... a common occurrence, but a necessary one in the event that lice have simply gotten ...
(Date:6/25/2016)... , ... June 25, 2016 , ... First Choice ... States, named Dr. Sesan Ogunleye, as the Medical Director of its new Mesquite-Samuell Farm ... Medical Director of our new Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... DUBLIN , June 24, 2016 ... addition of the "Structural Electronics 2015-2025: Applications, ... In-Mold Electronics, Smart ... Integrated Photovoltaics Structural electronics involves ... as load-bearing, protective structures, replacing dumb structures such ...
(Date:6/24/2016)... According to a new market ... Needles, Safety Pen Needles), Needle Length (4mm, 5mm, 6mm, ... of Purchase (Retail, Non-Retail) - Trends & Global Forecasts ... market for the forecast period of 2016 to 2021. ... by 2021 from USD 1.65 Billion in 2016, growing ...
(Date:6/23/2016)... , June 23, 2016 Research and ... Global Market - Forecast to 2022" report to their ... treatment method for the patients with kidney failure, it replaces ... fluid from the patient,s blood and thus the treatment helps ... and chloride in balance. Increasing number of ...
Breaking Medicine Technology: