Given a paragraph, generate a claim that is supported by the given paragraph. 1) The claim must contain information from within the paragraph. 2) A sentence within the paragraph can be used as a claim. 3) The claim should not have contradictions within the paragraph. 4) The claim should be at most one sentence long.

Input: Consider Input: According to two studies published on Wednesday, DNA from these pre-modern humans may play a role in the appearance of hair and skin as well as the risk of certain diseases. Although Neanderthals became extinct 28,000 years ago in Europe, as much as one-fifth of their DNA has survived in human genomes due to interbreeding tens of thousands of years ago, one of the studies found, although any one individual has only about 2 percent of caveman DNA. "The 2 percent of your Neanderthal DNA might be different than my 2 percent of Neanderthal DNA, and it's found at different places in the genome," said geneticist Joshua Akey, who led one of the studies. Put it all together in a study of hundreds of people, and "you can recover a substantial proportion of the Neanderthal genome." Both studies confirmed earlier findings that the genomes of east Asians harbor more Neanderthal DNA than those of Europeans. This could be 21 percent more, according to an analysis by Akey and Benjamin Vernot, published online in the journal Science. Still, "more" is a relative term. According to the paper by geneticists at Harvard Medical School, published in Nature, about 1.4 percent of the genomes of Han Chinese in Beijing and south China, as well as Japanese in Tokyo come from Neanderthals, compared to 1.1 percent of the genomes of Europeans. Anthropologists expressed caution about the findings. Fewer than half a dozen Neanderthal fossils have yielded genetic material, said Erik Trinkaus of Washington University in St. Louis, one of the world's leading experts on early humans. Using this small sample to infer how much Neanderthal DNA persists in today's genome is therefore questionable, he said. As expected, since Neanderthals never existed in Africa, Africans and those who trace their ancestry to that continent have almost no Neanderthal DNA, the Harvard team found. Human ancestors began migrating out of humanity's natal continent as early as 1 million years ago, paleoanthropologists infer from fossil evidence, and between 500,000 and 200,000 years ago evolved into the robust, large-browed Homo neanderthalensis in Western Europe. Ever since scientists extracted DNA from the remains of Neanderthals, they have known that people today carry snippets of cavemen genes, in the amounts of 2 percent to 3 percent. That clinched the case that Neanderthals and modern humans interbred, probably 40,000 to 80,000 years ago, soon after the latter arrived in Europe from Africa. The new studies add details about how much DNA and of what kind we inherited. "The story of early human evolution is captivating in itself, yet it also has far-reaching implications for understanding the organization of the modern human genome," Irene Eckstrand of the National Institutes of Health's National Institute of General Medical Sciences, which partially funded the research, said in a statement. "Every piece of this story that we uncover tells us more about our ancestors' genetic contributions to modern human health and disease." The Harvard team used a novel genetic algorithm to estimate the probability that a particular genetic variant arose from Neanderthals. Basically, they started with the genome of a 50,000-year-old Neanderthal, and determined whether pieces of it also appeared in some non-Africans but not in sub-Saharan Africans. The algorithm identified remnants of Neanderthal DNA, called alleles, in genes associated with type 2 diabetes, Crohn's disease, lupus, biliary cirrhosis and smoking behavior. "But we can't tell if the Neanderthal alleles are contributing to disease," said Harvard's Sriram Sankararaman, lead author of the paper in Nature. Areas "with increased Neanderthal ancestry tend to be higher the farther away you go from genes," sitting, instead, in regions of the genome that do not actually produce the proteins, enzymes and other working molecules of the body. Neanderthal DNA does sit within some genes, however, such as those for keratin, a fibrous protein that makes skin, hair and nails tough and can be beneficial in colder environments by providing thicker insulation. The endurance of this Neanderthal DNA suggests that our caveman inheritance was adaptive, picked by natural selection to persist in our genome, generation after generation, because it conferred a survival advantage in individuals who carried it. The Harvard team analyzed the genomes of 1,004 people to estimate which populations got more or fewer Neanderthal DNA. Confirming a 2013 study, they found more in the genomes of east Asians than in Europeans. But they also dug deeper. Puerto Ricans and Spaniards have the least Neanderthal DNA, 1.05 percent and 1.07 percent respectively. That is curious because Neanderthals made their last stand on the Iberian peninsula, finally dying out there 28,000 years ago. Across all populations, Neanderthal DNA is conspicuously low in regions of the X chromosome and in testes-specific genes. The paucity of Neanderthal genes among those active in the testes suggests that interbreeding wasn't a resounding success: It produced viable children, but the males were infertile. Although as much as 20 percent of Neanderthal DNA persists in modern genomes, according to the Washington scientists, vast regions of the latter are Neanderthal deserts. Among them is a region of chromosome 7 that includes a gene called FOXP2. "FOXP2 has previously been implicated in speech and language and may be an example of a gene that influences a uniquely human trait, which is why we find no Neanderthal sequences in these regions," said Akey.

Output: Modern humans more Neanderthal than once thought, studies suggest.

Input: Consider Input: The study tracked about 20,000 severely obese patients with Type 2 diabetes. Those who had weight loss surgery had a 40 percent lower chance of developing a heart attack or stroke in the five years following surgery compared to those who got usual care with diabetes medicines or insulin. For every 1,000 patients in the study who had surgery there were roughly 20 heart attacks or strokes compared to 40 such events per 1,000 who got regular care. More than 30 million Americans have diabetes, mostly Type 2 where the body loses the ability to produce or use insulin to turn food into energy. Other research has shown obesity surgery can reverse and even prevent diabetes. Taken together, it means doctors should discuss weight loss surgery more often, said study co-author Dr. David Arterburn of Kaiser Permanente Washington Health Research Institute in Seattle. Doctors usually mention insulin and pills, "but it's not always brought up that weight loss surgery is another available treatment option," Arterburn said. Researchers analyzed records from four U.S. health care systems: HealthPartners in Minnesota and Kaiser Permanente in Washington state, Northern California and Southern California. Results were published Tuesday in the Journal of the American Medical Association. The study can't prove cause and effect because patients weren't randomly assigned to get surgery. The researchers tried to match patients for gender, age, blood sugar levels and other factors. But other things they didn't account for could have contributed to the surgery patients' better results. Everyone in the study had a BMI, or body mass index, of at least 35. For instance, someone who is 5-foot-8-inches and weighs 230 pounds has a BMI of 35. Of the more than 5,300 who had surgery, most had gastric bypass, the most common type of stomach-shrinking operation. Some had gastric sleeve or gastric band procedures. The rest, nearly 15,000 people, had usual care. Obesity surgery can cost $20,000 to $25,000. Insurers are increasingly covering it, but some impose strict limits. The new findings suggest insurance coverage should be expanded for the right patients, Dr. Sayeed Ikramuddin of the University of Minnesota wrote in an accompanying editorial. Surgery is thought to help by affecting hormones, gut bacteria and other substances that affect how the body handles insulin and blood sugar. Weight loss without surgery also helps, but is difficult for many people to achieve. Most weight loss surgery today is done through small incisions. The dangers are similar to other surgeries, including a small chance of life-threatening complications, and some people need to have their surgeries repeated. ___ Follow AP Medical Writer Carla K. Johnson on Twitter: @CarlaKJohnson ___ The Associated Press Health & Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely responsible for all content.

Output: Obesity surgery may lower heart attack danger in diabetics.

Input: Consider Input: The story does not address costs. While the price of a supplement pill is typically just a few cents, this story would have been better if (like another story about this report that we reviewed) it had pointed out that Americans spend hundreds of millions of dollars every year on vitamin D supplements. This story reports that the Institute of Medicine committee concluded that typical consumption of vitamin D and calcium is adequate to support bone health, though the story does not define just what the term "bone health" means. The nature of the IOM report does not lend itself to quantifying potential benefits to bone health or other outcomes that were mentioned. The story does provide details about blood levels of vitamin D that are considered adequate by the IOM committee, as well as the higher levels advocated by some individual experts. The story also makes clear that the IOM committee concluded that evidence is lacking to claim that vitamin D or calcium produces other health benefits. This story does a good job of calling attention to kidney damage from excessive vitamin D and kidney stones caused by too much calcium. It also says that some studies have found other harms. This story does not do as good a job as some others in terms of explaining the process of evidence review and deliberation that the Institute of Medicine committee went through before issuing its report. However, readers are given a sense that the report is a consensus statement that attempts to sum up what is known about vitamin D and calcium. The story also refers to other reports and studies that provide context. The inclusion of comments from individual experts who dissent from some aspects of the IOM report accurately portray the active scientific debate on this topic. This story also does a nice job of pointing out recent examples in which hopes of vitamin benefits were dashed by careful experiments, thus helping to put into perspective the claims by individual scientists of hoped-for benefits of higher vitamin D consumption. The story clearly reports the Institute of Medicine committee conclusion that almost all Americans already consume enough vitamin D (and calcium) to support bone health. The comments from those who advocate broader use of supplements are labeled as individual opinions. There are multiple independent sources quoted in this story. This story could have provided readers with more background about the independent sources quoted; there is no mention of whether any of them have any potential conflicts. The story explains that there are alternatives to supplements, that vitamin D is included in foods (natural and fortified) and that vitamin D is produced in our skin when exposed to sunlight. The story refers to the availability of vitamin D in certain foods (natural and fortified), supplements, and that our skin produces vitamin D when exposed to sunlight. There is no claim of novelty. The story does not appear to rely on a news release.
Output: Report: A bit more vitamin D is good, not too much