Featured Research

from universities, journals, and other organizations

Sunlight Reduces Risk Of Lymph Gland Cancer

Date:
February 9, 2005
Source:
Swedish Research Council
Summary:
A new study from Karolinska Institutet and Uppsala University shows that, contrary to previous belief, sunlight reduces the chances of developing tumours in the lymphatic glands (malignant lymphoma). The study is to be published in the next number of The Journal of the National Cancer Institute.

A new study from Karolinska Institutet and Uppsala University shows that, contrary to previous belief, sunlight reduces the chances of developing tumours in the lymphatic glands (malignant lymphoma). The study is to be published in the next number of The Journal of the National Cancer Institute.

The number of new cases of lymphoma per year has tripled over the past 40 years, and the reasons are largely still a mystery. One hypothesis is that frequent exposure to the sun might increase the risk of developing this kind of cancer, especially the more common non-Hodgkin's form, but also the Hodgkin's type as well. However, a fresh study by research scientists at Karolinska Institutet and Uppsala University together with researchers from Denmark shows, on the contrary, that frequent exposure to ultraviolet rays, not only from the sun but also from sun lamps and solariums, seems to reduce the chances of developing Lymphoma, particularly non-Hodgkin's, by some 30-40 per cent.

"We find a similar correlation if we analyse responses by country or by skin-type," says Karin Ekström Smedby, postgraduate at KI's Department of Medical Epidemiology and Biostatistics. "This reduces the risk of systematic error and increases the credibility of our study."

The study was based on telephone interviews with more than 3,000 patients who were newly diagnosed as having malignant lymphoma, either non-Hodgkin's or Hodgkin's, between 1999 and 2002 in Sweden and Denmark, and just over 3,000 randomly chosen healthy members of the public. Participants were also asked about previous forms of diagnosed cancer.

Mechanisms unclear

It is already known that frequent exposure to the sun can increase the risk of skin cancer. If the results of this study can be replicated and complemented with additional data, Ms Ekström Smedby believes that advice about sunbathing might have to be amended.

"But we haven't looked into the mechanisms behind the effect of sunlight on lymphoma," she says. "More research is needed before we can give advice about the dangers and benefits of sunbathing in a wider perspective."

Researchers will now continue with other studies to identify the possible biological mechanisms behind this relationship.

###

Published in the J Natl Cancer Inst February 2005:

Ultraviolet Radiation Exposure and Risk of Malignant Lymphomas Karin Ekström Smedby, Henrik Hjalgrim, Mads Melbye, Anna Torrång, Klaus Rostgaard, Lars Munksgaard, Johanna Adami, Mads Hansen, Anna Porwit-MacDonald, Bjarne Anker Jensen, Göran Roos, Bjarne Bach Pedersen, Christer Sundström, Bengt Glimelis, Hans-Olov AdamiJ Natl Cancer Inst. 2005; 97: 1-11


Story Source:

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


Cite This Page:

Swedish Research Council. "Sunlight Reduces Risk Of Lymph Gland Cancer." ScienceDaily. ScienceDaily, 9 February 2005. <www.sciencedaily.com/releases/2005/02/050205130518.htm>.
Swedish Research Council. (2005, February 9). Sunlight Reduces Risk Of Lymph Gland Cancer. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2005/02/050205130518.htm
Swedish Research Council. "Sunlight Reduces Risk Of Lymph Gland Cancer." ScienceDaily. www.sciencedaily.com/releases/2005/02/050205130518.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

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
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) — Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) — At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Xtreme Eating: Your Daily Caloric Intake All On One Plate

Xtreme Eating: Your Daily Caloric Intake All On One Plate

Newsy (July 30, 2014) — The Center for Science in the Public Interest released its 2014 list of single meals with whopping calorie counts. 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