At some point in life, many people develop a mental problem. While most people get over it, for others it doesn’t go away easily.

The WHO says that about 20 percent of teenagers worldwide suffer from mental illness. It’s thought that the number of teenagers with mental illness around the world will increase by half by 2022. It will become one of the main causes of illness, and even death.

In China, the picture isn’t bright, either. About one tenth of teenagers under the age of 17 have a mental health challenge.

The world is changing fast. Study and relationships have always caused stress, but today the stress is much higher than before, the WHO said.

A research centre in Oxford University says that young people today have big stresses at school. For example, they experience bullying. In a 2017 report, the centre noted that the Internet was a special source of stress. Online, young people often see “messages about perfection” and this causes the young “great uncertainty about their futures”, says the centre.

Also, according to China Daily, Chinese people don’t ask for help with their mental problems. They fear that others will think less of them if they say that they are in mental trouble. Elaine Peng, a US mental health educator, makes a similar point. And in the UK, over three quarters of young people believe their mental problems have a social stigma. It is reported in 2017 that a quarter of young UK people wouldn’t ask for help if they developed a mental problem.

Young people who don’t ask for help for their condition may be creating problems for themselves in the future. Elaine Peng warned that, “If we hide our mental health, it may remain a problem forever.”

“My message for young people is, if you feel something is wrong within you—ask for help,” he told China Daily.

A new study of older adults finds too much daytime napping (小睡) may signal an increasing risk of Alzheimer’s disease. Investigators from Brigham report a relationship between daytime napping and cognitive (认知的) aging: too much daytime napping predicts an increased future risk of Alzheimer’s, and Alzheimer’s speeds up the increase in daytime napping during aging.

“Daytime sleep behaviors of older adults are often ignored, and an agreement for daytime napping in clinical practice and health care is still lacking,” said Peng Li of the Medical Program in Brigham, “Our team calls for a closer attention to 24-hour sleep patterns — not only nighttime sleep but also daytime sleep—for tracking the health of older adults.”

Researchers at the Brigham recognized that all previous studies on Alzheimer’s disease assessed napping within a participant only once, and most of the studies were subjective and questionnaire-based. In the new study, more individuals, with an average age of 81, were involved. They were provided with Actical, a watch-like device, to wear on their wrist for up to 14 days. After napping periods were identified, the nap duration and frequency were calculated.

The results suggested that too much daytime napping may signal an increasing risk of Alzheimer’s, and that faster yearly increase in daytime napping may be a worsening sign of the disease.

Researchers acknowledge that although the method of the new study has been widely used in sleep field studies, they recognize that Polysomnography (多导睡眠记录仪) is the gold standard for sleep scoring. Moreover, the participants studied are older, and therefore, the findings may not be easily translated to younger people. In addition, future studies should test whether a direct intervention in daytime napping can lower the risk of Alzheimer’s or cognitive decline.

“We hope to draw more attention to daytime sleep patterns,” said co-senior author Kun Hu of the Medical Program. “Sleep changes are critical in shaping the internal changes in the brain.”

Battling coronavirus is an experience that will forever be etched(铭刻）in my mind. I had what's considered a mild(温和的）case, but this virus is cruel. Now that I've recovered, I'm sharing my story because I want people to take this situation seriously.

My boyfriend and I have been trying to trace our steps back to where we first came into contact with coronavirus, and we think it was the night we went out to celebrate his sister-in-law's 40th birthday in early March.We went to a Mexican restaurant on Long Island that Friday night, and we shared lots of laughs and food.

We didn't think anything of it at the time, of course.The news was just beginning to report the spread of COVID-19 in America, so it wasn't exactly at the forefront of my mind. Looking back now, I think that must have been the start of it all. My boyfriend, Luis, began showing symptoms on Monday, but we assumed it was a typical cold. He works from home, so we figured it would just blow over. He had body aches and a minor fever for five days, but it didn't seem a cause for concern.Then it took me down.

My symptoms began on Monday, March 16. It had been a week since Luis had been sick. It all began with a low fever, about 99 to 100 degrees. I felt really weak, but I still went to work. By the day's end, I told my boss I had to leave. At this point,coronavirus had begun to take over New York, so I was told to work from home. On Tuesday, the headache started. It was so intense that I had to lie down—it was too difficult to keep my head up.

By the end of the week, I knew something was off. This wasn't what a typical illness felt like. Everything hurt. Luis and I decided it was time I seek medical help. My fever was only 100.6 degrees, but it felt like my skin was being pulled in opposite directions. My knees, hands, and even my earlobes hurt..

We went to nearby urgent care, where I filled out paperwork and waited for the doctor. After examining me, the doctor said he was certain I would test positive for coronavirus and that I'd contracted it from Luis.

That Saturday evening was the absolute worst. I didn't know how much worse I was going to get, and I feared the uncertainty of it all.

My fever finally broke the following Wednesday. I went to bed that night, and the next morning I awoke to a perfect 98.6-degree temperature that remained consistent. It was such a relief. Two days later, the health department called me with the news that I'd tested positive for COVID-19. By then, I was feeling mostly back to myself again, except for a lingering(继续存留）dry cough.