Teacher:In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Teacher: Now, understand the problem? Solve this instance: Wedded folks may not hit the treadmill as often as singletons, but they're sure making healthier decisions in the kitchen, according to new findings. 
  
 After amassing the data of 10,226 people from nine different countries, researchers compared the relationship between marital status and body mass index (BMI), and found that couples had a higher BMI than singles, contrary to what another study shows, according to a study published in the journal Social Science and Medicine. 
  
 The researchers took data from respondents in Austria, France, Germany, Italy, the Netherlands, Poland, Russia, Spain, and the United Kingdom and focused on potential reasons for weight gain by gathering data on eating behaviors and exercise regimens. While the differences in BMI were slight, they still highlight social effects on health. 
  
 “Our findings indicate that couples are not healthier in every respect, as has previously been assumed,” said Jutta Mata, lead author of the study and an assistant professor of health psychology at the University of Basel, in a statement. 
  
 A normal BMI is from 18.5 to 25, according to the World Health Organization (WHO). BMI looks beyond traditional notions of obesity, which categorized people as either fat or skinny. BMI also takes into account your height. Being overweight is having a BMI range of 25 to 30, and being obese is having a range from 30 and higher. 
  
 The average BMI of the single man in the study was 25.7, with the average married man’s BMI being 26.3. In contrast, the single woman’s average index was 25.1 while the married woman’s average index was 25.6. The average height of a woman in the study was 165 cm (5-foot-5) and the average height of a man in the study was 180 cm (5-foot-11). The study showed a difference of 2kg, which equals to nearly 4.5 pounds difference. 
  
 The Centers for Disease Control and Prevention states that nearly 35 percent or 78.6 million U.S. adults are obese. The estimated annual medical cost of obesity in America is $147 billion, with obesity-related conditions including heart disease, stroke, and diabetes. Obesity is greatest among middle-age adults. 
  
 However, while the data show that couples have in general a higher BMI index, survey data from the respondents showed that couples bought more regional and unprocessed products and less convenience (fast) food. Married men were more likely than single men to buy organic food. However, that doesn’t necessarily mean that they are healthier, because married men as a whole do less strenuous physical activities, such as play sports. 
  
 "That indicates that particularly men in long-term relationships are more likely to eat more consciously, and, in turn, probably more healthily," Mata said. 
  
 Source: Mata J, Frank R, Hertwig R. Higher body mass index, less exercise, but healthier eating in married adults: Nine representative surveys across Europe. Social Science and Medicine. 2015. ||||| Numerous studies have shown that marriage is good for your health. As a team of researchers from Basel, Nuremberg, and Berlin have now found, however, that does not apply to all health indicators. Their findings show that married couples on average eat better than singles, but that they also weigh significantly more and do less sport. The researchers compared the relationship between marital status and body mass index, which relates body weight to height. A high body mass index can be a risk factor for chronic illnesses such as diabetes or cardiovascular disease. 
  
 The researchers drew on representative cross-sectional data from 10,226 respondents in Austria, France, Germany, Italy, the Netherlands, Poland, Russia, Spain, and the United Kingdom. Their study is the first to compare the relationship between marital status and body mass index in nine European countries. Beyond their focus on married couples, the researchers conducted additional analyses with cohabiting couples. They also examined possible reasons for weight gain by asking respondents about their eating and exercise behaviors. 
  
 Findings from all nine countries showed that couples have a higher body mass index than singles -- whether men or women. The differences between countries were surprisingly small. 
  
 According to the World Health Organization, a normal body mass index is between 18.5 and 25. Overweight is defined as an index between 25 and 30, and obesity as above 30. The average body mass index of the single men in the study was 25.7; that of the married men was 26.3. For women, the average index was 25.1 for singles and 25.6 for married women. 
  
 Although these differences may seem small, they are meaningful. In an average-height woman of 165 cm or an average-height man of 180 cm, they represent a difference of about 2 kg. Importantly, the effects of socio-economic status, age, and nationality are already taken into account in these results. "Our findings show how social factors can impact health. In this case, that the institution of marriage and certain changes in behavior within that context are directly related to nutrition and body weight," says Ralph Hertwig, Director of the Center for Adaptive Rationality at the Max Planck Institute for Human Development in Berlin. 
  
 Survey findings on respondents' eating and exercise behaviors offered possible reasons for this trend. For example, couples reported buying more regional and unprocessed products and less convenience food. Moreover, married men were more likely than single men to buy organic and fair trade food. "That indicates that particularly men in long-term relationships are more likely to eat more consciously and, in turn, probably more healthily," says Jutta Mata, lead author of the study and Assistant Professor of Health Psychology at the University of Basel. But it does not mean that they are generally healthier: The study also shows that married men do less sport than singles. "Our findings indicate that couples are not healthier in every respect, as has previously been assumed," says Jutta Mata. 
  
 The respondents were asked about their eating and exercise behaviors and attitudes in face-to-face interviews. This approach ensures higher data quality: People's self-reports, for example of their weight, are more realistic if they are asked in person rather than, for example, by telephone. |||||
Student:
Marriage doesn't just add to your happiness, but also to your waistline, according to a new study. But singles shouldn't boast just yet. German and Swiss researchers surveyed 10,226 people in nine European countries on their marital status and body mass index—a health indicator based on a person's height and weight—as well as their eating and exercise habits. The results, which factored in socioeconomic status, age, and nationality, show marriage really does make you pack on the pounds: an extra 4.5 pounds in average-height 5-foot-11-inch men and 5-foot-5-inch women, to be precise, reports Medical Daily. That number is based on an average BMI of 25.7 for single men, compared to 26.3 for married men. Single women had a BMI of 25.1, while the number was 25.6 for married women, per ScienceDaily. A normal BMI is 18.5 to 25; 25 to 30 is considered overweight. Though the risk of chronic illnesses like diabetes and cardiovascular disease climb with a person's BMI, the study doesn't actually show single people are healthier. Married men and women across Austria, France, Germany, Italy, the Netherlands, Poland, Russia, Spain, and the United Kingdom were found to eat better than their single counterparts. Married couples reported buying more regional and unprocessed foods and less fast food, while married men were more likely to buy organic and fair-trade food than single men. "That indicates that particularly men in long-term relationships are more likely to eat more consciously and, in turn, probably more healthily," the lead author says. But here's the downside: Married men also skimp on physical activity, the author notes, which suggests "couples are not healthier in every respect, as has previously been assumed." (This 1970s marital trend is on the rise.)