Featured Research

from universities, journals, and other organizations

Hair Dye Use Increases Risk Of Non-Hodgkin's Lymphoma

Date:
February 17, 2004
Source:
Yale University
Summary:
Yale researchers have found that lifetime users of hair coloring products have an increased risk of developing non-Hodgkin's lymphoma (NHL), a cancer that attacks the lymphatic system, part of the body's immune system.

Yale researchers have found that lifetime users of hair coloring products have an increased risk of developing non-Hodgkin's lymphoma (NHL), a cancer that attacks the lymphatic system, part of the body's immune system.

"An increased risk of NHL was found only among women who began using hair-coloring products before 1980," said principal investigator Tongzhang Zheng, associate professor of epidemiology and environmental health at Yale School of Medicine. "Women who used darker permanent hair coloring products for more than 25 years showed the highest increased risk. We also found that the risk of NHL associated with hair coloring product use appears to vary based on subtype of the disease."

There has been a worldwide increase in NHL cases and Connecticut is one of those areas with a confirmed increase. Little is known about the origin and the risk factors responsible for the increasing incidence of the disease. Zheng said previous studies on hair dye use and NHL have been contradictory and inconclusive. This is the first study to examine the impact of hair dye use with time period of use as a key factor.

"Hair coloring products have undergone tremendous change over the last 20 years," said Zheng. "Since 1980, many carcinogens have been removed from some formulas, which vary depending on whether the dye is permanent, semi-permanent, darker or lighter."

The six-year study was conducted on 601 Connecticut women diagnosed with varying subtypes of NHL between the ages of 21 and 84. The women were asked to identify the type of hair coloring products they had ever used, length of time used, and their age when they stopped using it. The study included a control group of 717 women.

Zheng and his colleagues did not find an increased risk of NHL overall among women who started using hair-coloring products in 1980 or later.

"This could reflect the change in hair dye formula contents over the past two decades, or indicate that recent users are still in their induction and latent period," said first author Yawei Zhang.

Other authors on the study included Theodore R. Holford, Brian Leaderer, Stuart Flynn, Geovanni Tallini and Patricia Owens of Yale; Sheila Hoar Zahm of the National Cancer Institute; and Peter Boyle of Europe Institute of Oncology, Milan, Italy.


Story Source:

The above story is based on materials provided by Yale University. Note: Materials may be edited for content and length.


Cite This Page:

Yale University. "Hair Dye Use Increases Risk Of Non-Hodgkin's Lymphoma." ScienceDaily. ScienceDaily, 17 February 2004. <www.sciencedaily.com/releases/2004/02/040217072523.htm>.
Yale University. (2004, February 17). Hair Dye Use Increases Risk Of Non-Hodgkin's Lymphoma. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2004/02/040217072523.htm
Yale University. "Hair Dye Use Increases Risk Of Non-Hodgkin's Lymphoma." ScienceDaily. www.sciencedaily.com/releases/2004/02/040217072523.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Peace Corps Pulls Workers From W. Africa Over Ebola Fears

Peace Corps Pulls Workers From W. Africa Over Ebola Fears

Newsy (July 30, 2014) The Peace Corps is one of several U.S.-based organizations to pull workers out of West Africa because of the Ebola outbreak. Video provided by Newsy
Powered by NewsLook.com
Weather Kills 2K A Year, But Storms Aren't The Main Offender

Weather Kills 2K A Year, But Storms Aren't The Main Offender

Newsy (July 30, 2014) Health officials say 2,000 deaths occur each year in the U.S. due to weather, but it's excessive heat and cold that claim the most lives. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



      Save/Print:
      Share:

      Free Subscriptions


      Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

      Get Social & Mobile


      Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

      Have Feedback?


      Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
      Mobile: iPhone Android Web
      Follow: Facebook Twitter Google+
      Subscribe: RSS Feeds Email Newsletters
      Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins