Despite how you may feel, you're not the only one suffering from the runny or stuffy nose and dry, red eyes of nasal allergies. At least 25% to 30% of the US population has allergic rhinitis, and the number is rising. Recent studies in the US and Europe suggest that as many as 1 out of every 4 people may suffer from seasonal and year-round nasal allergies. That makes it the most common chronic respiratory illness. Related Articles Tips for Reducing MoldTip for Keeping Pollen Exposure to a MinimumWhat causes allergic reactions?Outdoor Allergy Quiz … [Read more...] about How common are nasal allergies?
How common are false positive pregnancy tests
Thousands of attendees of the 2017 Champions League final in Cardiff, Wales were mistakenly identified as potential criminals by facial recognition technology used by local law enforcement. According to the Guardian, the South Wales police scanned the crowd of more than 170,000 people who traveled to the nation’s capital for the soccer match between Real Madrid and Juventus. The cameras identified 2,470 people as criminals. Having that many potential lawbreakers in attendance might make sense if the event was, say, a convict convention, but seems pretty high for a soccer match. As it turned out, the cameras were a little overly-aggressive in trying to spot some bad guys. Of the potential criminals identified, 2,297 were wrongly labeled by the facial recognition software. That’s a 92 percent false positive rate. Wired obtained additional data regarding the Wales system and found it’s been consistently bad. At a boxing match last year, the cameras produced a 90 percent … [Read more...] about Facial Recognition Used by Wales Police Has 90 Percent False Positive Rate
Pregnancy tests can be performed with ease at home. Learn more in our pregnancy pictures. Publications International, Ltd. In the first few weeks after conception, you may notice changes in your body and in the way you feel. A late menstrual period is usually the first pregnancy symptom. However, many other conditions, from stress to certain chronic illnesses, can delay the onset of menses, so a late period is not always a reliable sign until at least two weeks after the date you expect it. On the other hand, you can have spotting while pregnant, so the presence of some bleeding doesn't eliminate the possibility of pregnancy. In the first weeks of pregnancy, you may feel more fatigued than usual. You may experience nausea or vomiting, especially in the morning, a week or two after your missed period. Your breasts may have some tingling or tenderness and may even enlarge. The areolae (the dark areas around the nipples) may darken even more. If you have been having trouble getting … [Read more...] about Pregnancy Tests Overview
The implements for a screening test for colon cancer are displayed. Many cancer screening tests have high rates of false positives. Media for Medical/UIG via Getty Images You can't believe this is happening. In a proactive health move, you undergo a CA-125 test, which screens for ovarian cancer. The test result comes in positive. Shocked and reeling, you spend an agonizing week waiting for the results of a subsequent surgical procedure. When the results are in, they're negative. You don't have ovarian cancer after all. The first result was a false positive. You're elated, yes, but also angry. What's the use of having a screening test if it might not be accurate? When it comes to your health, the more informed you are, the better. Medical tests can produce one of four results: True positive. The test says you have condition "X," and you really do.True negative. The test says you do not have condition "X," and you really don't.False positive. The test say you have condition "X," … [Read more...] about How False Positives Work (and What They Could Mean for Your Health)
According to a text written on papyrus from around 1400 B.C.E., a woman could determine whether she was pregnant or not by urinating in two different bags — one filled with barley and the other with wheat. Michael Pohuski/Getty Images We have a lot more in common with ancient people than we might think. For instance, it was as useful for a woman to know 3,500 years ago whether she was pregnant or not as it is today. And though some may scoff at many of the practices the ancients considered science — in ancient Egypt astrology was cutting-edge technology! — you've got to hand it to them: Some of their scientific methods have turned out to be pretty accurate. According to some unpublished ancient Egyptian medical texts in the Papyrus Carlsberg Collection at the University of Copenhagen in Denmark, what they had in the way of pregnancy tests was grain — specifically barley and wheat. According to one papyrus text from around 1400 B.C.E., in order … [Read more...] about Ancient Egyptian Pregnancy Test Survived Millenia Because It Worked