You aren't always what you eat – and that's a good thing. It's also why pesticides in reasonable usage haven't harmed arctic mammals such as caribou. Not only can caribou metabolize some current-use pesticides ingested in vegetation, they also limit the exposure of humans, including those who eat caribou.

Brain tumors avoid the body's defense forces by coating their cells with extra amounts of a specific protein - they use biological stealth technology to evade detection by the early-warning immune system that should detect and kill them. By the time the tumors are detected it's too late for the body to defeat them. 

The findings in mice and rats show the key role of a protein called galectin-1 in some of the most dangerous brain tumors, called high grade malignant gliomas. They had actually been trying to study how the extra production of galectin-1 by tumor cells affects cancer's ability to grow and spread in the brain.

BRCA1/2 genes are the most important breast cancer risks but after that, women with mutations in the PALB2 gene have on average a one in three chance of developing breast cancer by the age of seventy, according to a report in the New England Journal of Medicine.

In a study run through the international PALB2 Interest Group a team of researchers from 17 centres in eight countries led by the University of Cambridge analysed data from 154 families without BRCA1 or BRCA2 mutations, which included 362 family members with PALB2 gene mutations. The effort was funded by the European Research Council, Cancer Research UK and multiple other international sources.

Aspirin has been linked to a significant reduction in the risk of developing – and dying from – the major cancers of the digestive tract, i.e. bowel, stomach and esophageal cancer in a recent Annals of Oncology paper. Some have been concerned about side effects, such as instances of bleeding, due to aspirin.

The review of the available evidence assessed both the benefits and harms of preventive use of aspirin. The researchers, led by Professor Jack Cuzick, Head of  Queen Mary University of London's Centre for Cancer Prevention, found taking aspirin for 10 years could cut bowel cancer cases by around 35% and deaths by 40%. Rates of esophageal and stomach cancers were cut by 30% and deaths from these cancers by 35-50%.

It's no surprise that between 1880 and 1920, as the population increased and America became more settled, Missouri, Oklahoma and Arkansas had increased deforestation and that decreased the habitat for black bears and other forest species.

To remedy that and repopulate that mountainous region known as the Central Interior Highlands (CIH), more than 250 bears from Minnesota and Manitoba were relocated to Arkansas in the 1950s and 1960s. Researchers have analyzed genetic diversity in black bears in the 
the Central Interior Highlands
and determined that conservation management has worked, but bears are not out of the woods yet.

A variety of programs have been introduced in UK hospitals to reduce patient deaths over the past decade and Advancing Quality - imported from the United States - was first to demonstrate a significant reduction in patient deaths. 

It was introduced in the North West region of England in 2008 and Advancing Quality was found to have reduced patient deaths by 890 in the first 18 months of the policy's introduction.