Transcranial magnetic stimulation (TMS) of the left dorsolateral prefrontal cortex can treat symptoms of depression in humans by placing a relatively small device on a person's scalp and stimulating brain circuits, yet little is known about how TMS produces these beneficial effects.

Some studies have suggested that TMS may modulate atypical interactions between two large-scale neuronal networks, the frontoparietal central executive network (CEN) and the medial prefrontal-medial parietal default mode network (DMN). These two functional networks play important roles in emotion regulation and cognition.

Breast cancer is the second leading cause of cancer death in women, which is why so many medical professionals encourage women to get mammograms. But the tests are not very accurate: only a minority of suspicious mammograms actually leads to a cancer diagnosis.

Bad results lead to needless worry for women and their families—not to mention the time, discomfort and expense of additional tests, including ultrasounds and biopsies. 

 An analysis of death certificates from 1999 to 2010 has found that medications are the leading cause of allergy-related sudden deaths in the U.S. The study in the Journal of Allergy and Clinical Immunology also found that the risk of fatal drug-induced allergic reactions was particularly high among older people and African-Americans and that such deaths increased significantly in the U.S. in recent years.  

A new study has found that people with multiple sclerosis may reduce perceived fatigue and increase mobility through a series of combined strength training and fitness exercises. 

The research from the Miguel Hernández University of Elche, supervised by Professor Raúl Reina, aimed to analyze the effects of strength training on the fatigue that MS patients suffer. A total of 19 participants (5 men and 14 women) were split into two groups. Most took part in a 12-week training program, whilst others were included in a control group. The research was conducted in collaboration with the Neurology Department of Elche General Hospital.

Farm runoff and urban pollution in the Hawaiian islands is causing sea turtle tumors, according to a study in PeerJ.

The paper by researchers at  Duke University, the University of Hawaii and the National Oceanic and Atmospheric Administration finds that nitrogen in the runoff ends up in algae that the turtles eat, promoting the formation of tumors on the animals' eyes, flippers and internal organs.

A new report shows early detection of cancer could one day be as easy as a simple blood test. This test, called the "lymphocyte genome sensitivity" (LGS) test, could not only detect some cancers earlier than ever before, but it may eliminate the need for some types of biopsies, as well as identify those more likely to develop cancer in the future.

 "The test could allow earlier cancer detection, so helping to save peoples' lives," said Diana Anderson, co-author at the University of Bradford in West Yorkshire, United Kingdom.