Omega-3 fatty acids, taken by millions of people as a health supplement, could trigger aggressive prostate cancer, a study claims.
Research has shown the substance could increase the risk of high-grade disease by 71%.
Taking omega-3 was also associated with a 44% greater chance of developing low-grade prostate cancer. Overall, the fatty acids raised the risk of all prostate cancers by 43%.
Writing in the online edition of the Journal of the National Cancer Institute scientists said people considering increasing their intake of omega-3 "should consider its potential risks".
Emmerdale actress Gemma Oaten and her family came into the Calendar studio to talk about how her father, Dennis, survived prostate cancer.
During Calendar, the family watched our film about Lynne Cramphorn, whose husband, West Yorkshire's Chief Constable Colin Cramphorn, died from prostate cancer.
Dennis Oaten told Christine and John how too many men think "it will never happen to you". It was only at the insistence of his wife, Marg, that he finally went to the doctor.
And Gemma will be appearing on Daybreak, as part of ITV's Stand By Your Man prostate cancer campaign, tomorrow morning.
To find out how you can pledge your support for our campaign here
Meet our prostate cancer blogger Patrick. He's had first hand experience of the condition, and speaks to us candidly about his fight.Read the full story ›
A new film with an all-star cast is aiming to raise awareness of prostate cancer by telling the story of a cancer support group.
The inspiration behind the film comes from members of a real support group - one of many across the country - who meet in north London to speak about their experiences.
Between them they hope to encourage more men to talk openly about a disease that one in eight of all men will be diagnosed with at some point in their lives.
ITV News correspondent Lewis Vaughan Jones went to meet them:
Someone who has experienced the shock of being diagnosed with prostate cancer is the former Newcastle United chairman and the man behind the Metro Centre, businessman Sir John Hall.
Sir John spoke candidly to ITV News Tyne Tees at his family's estate about how he is coping with life as a cancer patient, the strength he gets from his wife Lady Mae and the importance of an early diagnosis.
Watch the full interview with Pam Royle here:
For more information visit Prostate Cancer UK.
In the run-up to Father's Day, ITV is running a campaign with charity Prostate Cancer UK to raise awareness of the disease, which kills at least one man every hour.
Bill Arthur was diagnosed with prostate cancer after a routine medical examination.
The 56-year-old, who lives in Newark in Nottinghamshire, had shown no symptoms and thought he was fit and healthy.
Bill, who works as a Rugby League presenter, is now undergoing a two year treatment plan.
He wants to use his story to encourage more men to go to the doctors and be tested.
Cancer specialist Meg Burgess has today told ITV News Central what symptoms to look out for in hope of spotting prostrate cancer early.
Needing to urinate often, leaking before going to the toilet and a weak flow are just some of the symptoms to look out for.
Prostate cancer kills 1,600 men in London every year.
Today, ITV in conjuction with Prostate Cancer UK launches "Stand By Your Man" which is an initiative aimed at saving lives.
ITV News London have been speaking to a family in Wandsworth, whose father had prostate cancer and who died because of a rare fatal reaction to his chemotherapy treatment.
One in eight men are diagnosed with prostate cancer in their lifetime - and for some it comes too late. Our health correspondent Jacquie Bird has been to meet Jenny French, whose husband John died last year from prostate cancer.