Drinking more than two alcoholic drinks daily in middle-age may raise your stroke(中风) risk more than traditional factors such as high blood pressure and diabetes（糖尿病）, according to new research in the American Heart Association journal Stroke.

    In a study of 11,644 middle-aged Swedish twins who were followed for 43 years, researchers compared the effects of an average of more than two drinks daily ("heavy drinking") to less than half a drink daily ("light drinking").

The study showed that:

·Heavy drinkers had about a 34 percent higher risk of stroke compared to light drinkers.

·Mid-life heavy drinkers (in their 50s and 60s) were likely to have a stroke five years earlier in life irrespective of genetic and early-life factors.

·Heavy drinkers had increased stroke risk in their mid-life compared to well-known risk factors like high blood pressure and diabetes.

·At around age 75, blood pressure and diabetes appeared to take over as one of the main influences on having a stroke.

Past studies have shown that alcohol affects stroke risk, but this is the first study to pinpoint differences with age. "We now have a clearer picture about these risk factors—-how they change with age and how the influence of drinking alcohol shifts as we get older," said Pavla Kadlecová, M.Sc., a statistician at St. Anne's University Hospital's International Clinical Research Center in the Czech Republic.

    Researchers analyzed results from the Swedish Twin Registry of same-sex twins who answered questionnaires in 1967-1970. All twins were under age 60 at the start. By 2010, the Registry had provided 43 years of follow-up, including hospital discharge(出院) and cause of death data.

    Researchers then sorted(整理) the data based on strokes, high blood pressure, diabetes and other cardiovascular (心血管)incidents. Almost 30 percent of participants had a stroke. They were categorized(将……分类) as light, moderate, heavy or non-drinkers based on the questionnaires. Researchers compared the risk from drinking and health risks like high blood pressure, diabetes and smoking. Among identical twin pairs, siblings(兄弟姐妹) who had a stroke drank more than their siblings who hadn't had a stroke, suggesting that mid-life drinking raises stroke risks regardless of genetics and early lifestyle.

    The study is consistent (一致)with the American Heart Association's recommended limit of two drinks a day for men and one for women. That's about 8 ounces of wine for a man and 4 ounces for a woman.

    Regular heavy drinking of any kind of alcohol can raise blood pressure and cause heart failure or irregular heartbeats over time, in addition to stroke and other risks. "For mid-aged adults, avoiding more than two drinks a day could be a way to prevent stroke in later productive age ," Kadlecová said.

    One day, Mr. Smith went to a dinner party. He was wearing very old clothes. He came into the room.But people in the room didn't look at him. They didn't ask him to sit at the table. He wasn't happy. But he said nothing.Mr. Smith went home quickly and put on his best clothes. He went back to the party. Everyone in the room stood up and looked at him. They gave him good food to eat.Mr. Smith took off his coat, and put it on the food and said, "Eat, coat!" The other people were surprised and asked, "What are you doing? Why do you do that?" Mr. Smith answered, "I am asking my coat to eat food. When I wore old clothes, you didn't look at me. You didn't ask me to sit down. Now I am wearing these nice clothes. And you give me good food. Now I see, you give the food to my coat, not to me."

    As the world around them is changing, teenagers continue to need guidance and support from both parents. Studies show that teens who have an active relationship with their fathers are less likely(可能的)to involve themselves in dangerous behaviors and more likely to succeed in school and develop higher self-worth, because their fathers go beyond social expectations to devote attention to them.

    Peer(同龄人)pressure has always been a big part of the teens' experience. Even the best father can't completely protect their kids from the growing influence of their peer group. However, studies show that teenagers whose fathers focus on their lives are more likely to resist (抵抗)the more bad effects of peer pressure, taking drugs, for example.

    Teens may not like to admit it, but they are watching their parents closely and often follow their example. An interesting finding explains just how important parents are, especially Dad. Swiss researchers discovered that if Dad attends church, even though Mom doesn't, 44 percent of the kids are still more likely to keep going to church as adults. But if Mom goes regularly and Dad never shows up, only 2 percent of the kids continue to attend.

    Teenagers face a lot of difficult choices, especially in their later teens. Fathers don't get to make those choices for them, but they can be influenced. For example, teenagers can learn a lot from their parents' concern on what to do when they finish high school. Should they go directly to college and, if so, where? Should they consider going to trade schools, joining the army or looking for a job? A father's guidance brings a long-term perspective that teens often lack to these important decisions.

    A woman lost the sight in one eye after going swimming in a pool at a hotel wearing contact lenses（隐形眼镜）. Jennie Hurst, from Southampton, suffered from a rare and painful infection caused by amoeba（变形虫）in water. The infection causes people to be sensitive to light and the 28-year-old said she had to stay in a dark room for three months. She is now warning of the dangers of swimming or showering wearing contacts.

    Ms Hurst experienced four operations and a treatment in which she had eye drops every half hour. "During that time I stayed in my bedroom with black curtains at the window. The only thing I could do was to listen to the radio. One evening, I was so eager to look out of window to get a look of the outside world that I opened my curtains in the middle of the night. As soon as I did this the moon shone in my eyes and it really hurt. I didn't do that again. I have been left with no sight in my left eye and the damage to my right eye could be lasting," she said.

    Ms Hurst had been wearing contact lenses for five years. "I don't even like swimming,"she said. "My friends were quite surprised that I had gone swimming and probably thought that I had been a bit lazy. I wasn't aware of the problem at all — it didn't even enter my brain to take them out. I felt responsible that I had let it happen when actually I could have just taken my contacts out."

    A bite from a tsetse fly (采采蝇) is an extremely unpleasant experience. It is not like a mosquito, which can put its thin mouthpart directly into your blood, often without you noticing. In contrast, the tsetse fly's mouth has tiny saws on it that saw into your skin on its way to suck out your blood.

    To make matters worse, several species of tsetse fly can transmit diseases. One of the most dangerous is a parasite that causes ＂sleeping sickness＂, or ＂human African trypanosomiasis＂to give it its official name. Without treatment, an infection is usually fatal.

    Like so many tropical diseases, sleeping sickness has often been neglected by medical researchers. However, researchers have long endeavored to understand how it avoids our bodies' defence mechanisms. Some of their insights could now help us eliminate sleeping sickness altogether.

    There are two closely-related single-celled parasites that cause this deathly sleep: Trypanosoma brucei rhodesiense and T. b. gambiense. The latter is far more common: it is responsible for up to 95% of cases, mostly in western Africa. It takes several years to kill a person, while T. brucei rhodesiense can cause death within months. There are still other forms that infect livestock.

    After the initial bite, sleeping sickness symptoms often start with a fever, headaches and aching muscles. As the illness goes on, those infected become increasingly tired, which is where it gets its name. Personality changes, severe confusion and poor coordination can also happen.

    While medication does help, some treatments are toxic and can themselves be deadly, especially if they are given after the disease has reached the brain.

    It is worth noting that sleeping sickness is no longer as deadly as it once was. In the early 20th Century several hundred thousand people were infected each year. By the 1960s the disease was considered ＂under control＂ and had reached very low numbers, making its spread more difficult. But in the 1970s there was another major epidemic, which took 20 years to control.

    Since then, better screening programmes and earlier interventions have reduced the number of cases dramatically. In 2009 there were fewer than 10,000 cases for the first time since records began, and in 2015 this figure dropped to fewer than 3,000, according to the latest figures from the World Health Organisation. The WHO hopes the disease will be completely eliminated by 2020.

    While this decline looks positive, there may be many more cases that go unreported in rural Africa. To eliminate the disease completely, infections have to be closely monitored.

    More problematically, a series of new studies have shown that the parasite is more complicated than previously believed.

    Sleeping sickness has always been considered —— and diagnosed —— as a blood disease, because T. brucei parasites can readily be detected in the blood of its victims.

    Many languages are disappearing and languages such as English, Spanish and Chinese are increasingly taking over. Yet Maori promises to have a rosy future given that New Zealanders are showing great enthusiasm for speaking this local language.

    A "Maori renaissance (复兴)" blossomed in the 1970s as language activists championed their cause and Maori fought for greater political power. But until 2013, just 3.7 percent of New Zealanders spoke the language fluently, and many predicted it would soon die out. Now New Zealand's government is erasing prejudice and struggling to increase the percent of population who can speak basic Maori by 2040 to 20. Prime Minister Jacinda Ardem said last month that her newborn daughter would learn both Maori and English. "It's an official language, so why should we dismiss its universal availability and its much more common use?" said Ms. Ardem, adding that she also planned to study the language. Grassroots are also spreading it by word of mouth Answering the phone with the greeting "kiaora" (hello) or ending an email withunga mihi' (thanks) has become a fashion. Maori is gradually becoming part of New Zealand's mainstream popular culture.

    Ajit Kumar Samah, a famous professor in Auckland University, published a book—Coniagious: why Maori catches on, where he introduces readers to the popularity of Maori and expresses his great anxiety for the lack of teachers who have the competence to teach the Maori language.

    People are not on the same wavelength, however. Suggestions on officially replacing English-language place names with traditional Maori ones have been rejected. So when a police car was designed using Maori, it was condemned by some as ridiculous because of the higher Maori rates of arrest and imprisonment.