1 . Horseback riding might not seem like a typical New York City activity, but one program has several horse farms throughout the city’s busy districts. GallopNYC provides lessons to veterans(老兵) and people with disabilities — horseback riding is their therapy(疗法).

Olivia Diver visits the GallopNYC location in the Howard Beach neighborhood in Queens. Diver has only been riding horses for a few months, but says she’s already felt the benefits. “It helped me come out of my comfort zone and be less shy and less in my shell,” she said. Trying something new shows her she can accomplish other things as well.

James Wilson,executive director at GallopNYC, says there are many ways horses can be therapeutic. “The horse sees the world in the way somebody with post-traumatic stress disor-der (PTSD) might see the world, in a really guarded, sort of anxious way,” he explained. “So,somebody with PTSD and a horse can sort of partner together and see the world in the same way and kind of take care of each other.” Horses can also help with physical disabilities. After two years of therapeutic riding, a teenager, who had so little core strength that his mother had to be in the bathtub with him, had enough core strength that he could be in the shower by himself. Wilson said, “The movement of the horse will loosen up muscles that might be really tight. And the movement helps stimulate other body parts and other muscles that you might not use. ”

“CallopNYC has about 1,000 people on is waitlist for lessons, but prioritizes people with disabilities and veterans. We believe that everybody benefits from the time on a horse, so if you want to ride a horse, come on, let’s go,” Wilson said. Lessons are $55, but the non-profit fundraises to help cover or lower the cost for customers who may need support.

3 . A study led by Plana-Ripoll, a doctor at Aarhus University in Denmark, tries to deal with a fundamental question that has bothered researchers for more than a century—what exactly causes mental illness?

In the hope of finding the answer, scientists have piled up a large amount of data over the past decade, through studies of genes and brain activity. They have found that many of the same genes underlie seemingly distinct disorders and that changes in the brain’s decision-making systems could be involved in many conditions.

The researchers are also rethinking theories of how our brains go wrong. The idea that mental illness can be classified into distinct, separate categories like “anxiety” has been disproved to a large extent. Instead, recently they’ve found that disorders shade into each other, and there are no hard dividing lines.

The researchers are trying to understand the biology that underlies mental illness. They have a few theories. Perhaps there are several dimensions of mental illness, so depending on how a person scores on each dimension, they might be more likely to have some disorders than others. An alternative idea is that there is a single factor that makes people easier to suffer from mental illness in general. What disorder they develop is then determined by other factors. Both ideas are being taken seriously though the former one is more widely accepted by the researchers.

The details are still unclear, but most researchers agree that one thing is specific: The old system of categorizing mental disorders into neat boxes does not work. They are also hopeful that, in the long run, replacing this framework with one that is grounded in biology will lead to new drugs and treatments. The researchers aim to reveal, for instance, the key genes, brain regions and neurological processes involved in psychopathology(精神病理学), and target them with treatments. Although it might take a while to get there, they are long-term optimistic if the field really does its work.

6 . A man with advanced Parkinson’s disease (帕金森氏症) is now able to walk almost normally again thanks to electrodes implanted (电极植入) in his spinal cord (脊椎), researchers said on Monday. The medical first was achieved by Swiss researchers who had previously pioneered similar breakthroughs to help disabled people walk again.

“This could be a game-changing technology to help bring back movement in people with advanced Parkinson’s,” said David Dexter, research director at Parkinson’s UK.

Marc Gauthier, the 62-year-old patient who lives in France, has suffered from the brain disorder for about 30 years. Like more than 90 percent of people with advanced Parkinson’s, Mar c has had great difficulty walking. What are known as “freezing” experiences — during which patients are unable to move for a limited time, putting them at risk of falling — are particularly awful, Marc told AFP.

Much remains unknown about Parkinson’s disease, making treatment difficult. But the disease can seriously affect the lives of patients, sometimes keeping them to bed or a wheelchair. So when the opportunity came to go through an operation in Switzerland, Marc gladly accepted the chance.

“Now I can do whatever I want,” Marc says. “I can go for a walk and go out shopping by myself.” He adds that he can now walk much more easily — he is even planning a trip to Brazil — but it still requires concentration, particularly when climbing upstairs.

The Swiss team, led by surgeon Jocelyne Bloch and neuroscientist Gregoire Courtine , implanted a complex system of electrodes called a “neuroprosthesis (神经假体)” at important points along Marc’s spinal cord. The neuroprosthesis was first tested on animals, and then implanted in Marc, who has used it for roughly eight hours a day over nearly two years.

The Swiss team has expanded their experiment to a group of six Parkinson’s patients, aiming to know how it could help others, given the disease affects people in different ways. However, treatment using the implant could be quite expensive, potentially limiting how many patients would have access.

7 . Are you pessimistic by nature? Well, it’s not good for your brain. A new study has found that repeated negative thinking in later life is linked to cognitive(认知) decline and greater deposits(沉积) of two harmful proteins responsible for Alzheimer’s disease(阿尔茨海默病).

Negative thinking behaviors, such as reflection about the past and worry about the future, were measured in more than 350 people over the age of 55 over a two-year period. About a third of the participants also had a brain scan to measure deposits of proteins, which cause Alzheimer’s disease. The scans showed that people who spent more time thinking negatively had more harmful proteins, worse memory and greater cognitive decline than people who were not pessimists.

The study also tested for levels of anxiety and depression and found greater cognitive decline in depressed and anxious people, which agrees with previous research. But proteins did not increase in people who were already depressed and anxious, leading researchers to suspect that repeated negative thinking might be the main reason why depression and anxiety lead to Alzheimer’s disease.

“This is the first study showing a biological relationship between repeated negative thinking and Alzheimer’s disease, and gives physicians a more precise way to assess risk and offer treatment,” said neurologist Dr. Richard Isaacson. “This study will change the way I care for my patients at risk.”

Fiona Carragher, who is chief policy and research officer at the Alzheimer’s Society in London, pointed out that this isn’t saying that a short-term period of negative thinking will cause Alzheimer’s disease. “Most of the people in the study were already identified as being at higher risk of Alzheimer’s disease,” she added. “so we need more research to see if these results exist within the general population.”

9 . Elderly people have a higher chance of suffering from illnesses such as diabetes, cancer, and heart disease. One common health problem that affects them is Alzheimer’s disease, which affects a person’s memory, behavior, and thinking. Because of memory loss and behavioral changes, people with Alzheimer’s may slowly become unable to take care of themselves, eventually requiring constant care from family members or caregivers.

There is no cure for Alzheimer’s at the moment—drugs can only treat its symptoms.

But technology can improve the lives of those living with the condition by making it easier for them to go about their daily activities. For example, tracking devices placed in watches or jewelry can monitor where a person is. Automated reminders can also be stored in motion sensors and placed around the house. When a sensor detects movement, it can play a recorded voice message to remind the person to lock the door or turn off the stove.

Alzheimer’s disease is a huge challenge, but we may be getting close to finding a solution. In the future, it might be possible to treat Alzheimer’s without using drugs. A team of researchers in Australia has created a form of technology that can send sound waves into the brain. These sound waves help to clear waste in the brain that contributes to Alzheimer’s. The team has tested their technology and found that it helped to restore memory in 75 percent of mice. Work on the technology isn’t complete, but, if successful, it could prevent memory loss in people with Alzheimer’s. This really does fundamentally change the understanding of how to treat this disease and researchers foresee a great future for this approach.