Some brain tumors are notoriously difficult to treat. Whether surgically removed, zapped by radiation or infiltrated by chemotherapy drugs, they find a way to return.

The ability of many brain tumors to regenerate can be traced to cancer stem cells that evade treatment and spur the growth of new tumor cells.

But some brain tumor stem cells may have an Achilles' heel, scientists have found. The cancer stem cells' remarkable abilities have to be maintained, and researchers at Washington University School of Medicine in St. Louis have identified a key player in that maintenance process. When the process is disrupted, they found, so is the spread of cancer.

Adults who are following the DASH-style eating pattern to lower their blood pressure can expand their protein options to include lean, unprocessed pork, according to research from Purdue University.

'This study supports that the DASH diet can include lean, unprocessed red meats in the appropriate serving sizes,' said Wayne Campbell, a professor of nutrition science.

The study compared lean, unprocessed pork with chicken and fish as the predominant protein source in a DASH-style diet.

This study applies only to cuts of unprocessed lean pork, such as tenderloin and fresh, uncured ham trimmed of visible fat. Each serving size was three ounces. These findings should not be extrapolated to other pork products with higher fat and salt content, Campbell said.

A comprehensive study of a major California estuary has documented the links between nutrient runoff from coastal land use, the health of the estuary as a nursery for young fish, and the abundance of fish in an offshore commercial fishery. The study focused on Elkhorn Slough and Monterey Bay on California's central coast. 

A new study shows that, from 1500 until 2000, about a third of floods in southwestern Netherlands were deliberately caused by humans during wartimes. Some of these inundations resulted in significant changes to the landscape, being as damaging as floods caused by heavy rainfall or storm surges. 

This month marks the 10-year anniversary of the first successful total marrow irradiation (TMI) using the TomoTherapy System, first performed at City of Hope in Duarte, California. Since then, numerous centers around the world have adopted the approach, once considered to be impossible because of limitations inherent to conventional radiation therapy systems.

TMI is an advanced form of total body irradiation, which has traditionally been an important part of bone marrow transplants (BMT). People with certain types of cancers or other diseases including leukemias, lymphomas and multiple myeloma may undergo a BMT as part of their treatment. Before the transplant, chemotherapy and/or radiation may be given to neutralize any cancer in the marrow.

Nutritionists take a lot of criticism - conferences that revolve around Yogic flying instructors and actresses who think their breast milk has "otherworldly power" will do that to your field, but there is at least one way to know if someone knows what they are talking about - multidisciplinary health care professionals who hold the Certified Nutrition Support Credential (CNSC) scored significantly higher on a survey about their approaches to nutrition support practice than those who do not hold the credential according to new study. Multidisciplinary may be more important than the CSNC, if it means actual knowledge of biology and medicine.