JUDY WOODRUFF: But first what science is still learning from the survivors of the Hiroshima and Nagasaki bombings. This week, President Obama becomes the first sitting president to visit Hiroshima. Miles O'Brien looks at how much of what we know about the impact of radiation comes from a study about the long-term effects there. And warning: Some images might be disturbing to some viewers. MILES O'BRIEN: The scientists who designed the first atomic weapons didn't spend much time researching the long-term health consequences of their devastating creation.
Bolting your food increases your risk of obesity, diabetes and heart disease, research suggests. People who eat very quickly do not give their bodies time to realise it is full – meaning they tend to eat more. Eating slowly, savouring every mouthful and taking time over a meal is better for overall health. A study of more than 1,000 middle-aged people found those who ate quickly were five-and-a-half times more likely than slow eaters to go on to develop metabolic syndrome - a cluster of conditions including obesity and high blood pressure, blood sugar and cholesterol. Dr Takayuki Yamaji, a cardiologist at Hiroshima University in Japan, said: 'Eating more slowly may be a crucial lifestyle change to help prevent metabolic syndrome.'
Small solid kidney masses can be adequately differentiated for diagnosis on dynamic CT images by using a deep learning method with a convolutional neural network (CNN), according to new research. Currently, diagnosis with dynamic CT has depended largely on radiologist experience. This study shows automated image analysis of these masses with deep learning can discern between benign and malignant tumors without requiring a radiologist to have significant experience. The findings were published in an ahead-of-print issue of American Journal of Roentgenology. Researchers from Okayama University in Japan studied 168 pathologically diagnosed small solid masses (less than 4cm) from 159 patients between 2012 and 2016.
Scientists believe they have created a way to detect if a nuclear warhead has been successfully deactivated. Currently, it is almost impossible to tell if the weapon itself has been dismantled. Experts at Massachusetts Institute of Technology (MIT) have created a neutron beam which detects the telltale presence of a specific type of plutonium used in weapons. Nuclear warheads have a distinctive material layout as well as the giveaway presence of the plutonium which is responsible for the weapon's destructive power. A plutonium bomb was dropped on the city of Hiroshima in 1945 and killed thousands of people instantly.
People who are too hard on themselves may be more likely to develop OCD or anxiety, a study suggests. Those who blame themselves when things go wrong were more likely to have obsessive compulsive disorder (OCD) or generalised anxiety disorder (GAD). Researchers said those with OCD are'tortured' by'negative thinking', while those with GAD'worry about everything'. But simply questioning why you are fretting could be all it takes to snap out of the bad habit, they added. The research was carried out by Hiroshima University, Japan, and led by Dr Yoshinori Sugiura, from the department of behavioral sciences.