Hot answers tagged

173

A qualified doctor challenging the Germ Theory of Disease after 1900? Wow. This is just a smattering - just a random tasting - of the thousands - or perhaps millions - of studies showing that contagious diseases are contagious. Dog to dog transmission of a novel influenza virus (H5N2) isolated from a canine To determine whether the novel H5N2 was ...


126

Quick summary: The first cases in Brazil were nearly 500km from the GM mosquito testing areas, the other side of a state larger than Spain Brazil wasn't even the first place this particularly explosive microcephaly-linked strain of the Asian lineage of Zika was spotted. Its genetics and behaviour link it to a very similar outbreak in French Polynesia (the ...


69

The best summary is probably to quote from the WHO director general Margaret Chan's statement on announcing that zika had been declared a "Public Health Emergency of International Concern": The experts agreed that a causal relationship between Zika infection during pregnancy and microcephaly is strongly suspected, though not yet scientifically proven. All ...


45

Besides, taking away your stress exercise is proven to increase concentrations of norepinephrine, a chemical that can moderate the brain’s response to stress. and boosting happy chemicals usually within five minutes after moderate exercise you get a mood-enhancement effect. and alleviating long-term depression data suggests that active people are less ...


41

A google search for "All of these men have it" "Stay away from dance halls" mainly got web 2.0 user generated content websites such as reddit and pinterest. I came across a thesis, but it gave a different year, saying that it was 1942. By contrast, doing a search on the image gave a New Hampshire government website, with the following poster, by Montgomery ...


35

The claim is false, as evidenced by Prospective Evaluation of the Risk of Serious Bacterial Infection in Children Who Present to the Emergency Department With Hyperpyrexia (Temperature of 106°F or Higher) Pediatrics, July 2006; 118(1): 34–40. Data were collected prospectively on all children <18 years of age presenting to a pediatric emergency ...


31

According to research at UC-Davis, quite the opposite is true. The key finding: Our safety concern was that bacteria such as Escherichia coli O157:H7 and Salmonella, which might contaminate a work surface when raw meat was being prepared, ought not remain on the surface to contaminate other foods that might be eaten without further cooking. We soon ...


22

Tetanus toxin, which has been given the scientific name tetanospasmin, is created when the bacterium Clostridium tetani divides and grows. C. tetani cannot divide in an oxygenated environment, but as a piece of iron flakes off and rusts, it robs the surrounding environment of oxygen. This is the easiest way for C. tetani to reproduce and create toxins (...


19

The 20 million people in the United States at a given time figure is definitely too low. According to Prevalence of Genital Human Papillomavirus Among Females in the United States, the National Health and Nutrition Examination Survey, 2003–2006 Journal of Infectious diseases (2011) vol. 204 pages 566-573.: Overall prevalence of any HPV type as measured ...


18

Sensor Technologies Fingerprint scanners use one of two methods optical (light) capacitive See HowStuffWorks and note that this manufacturer has both "E-Field" and "Active Cap" sensors. Light So not all fingerprint readers shine light on your fingers. Also, patents such as this mention "light" and have no mention of "infra-red" so at first glance it ...


15

As pointed out by @KonradRudolph, this is only a partial answer. It addresses sexually-transmitted diseases, but not others. It needs further additions or a companion answer to properly address the question. Before we can point to the evidence that covers help, we need some evidence that there is any problem to solve. In a Salon article, Mary Roach ...


15

The Tencent screenshot is almost certainly a hoax, for the simple reason that such screenshots are extremely easy to fake. For example, here's how easy it is to get a "screenshot" of the New York Times showing millions of people dead in Japan. First, we search for coronavirus and pick a random article. Here's a good one: Next, hit F12 to open up developer ...


13

It is fine to have a plausible theoretical model of what might happen when eating more fibre, just so long as the theoretical model matches the actual experimental data. When it doesn't, it is time to rethink the model. What does the experimental data show? Well, we have a good source here: Pablo Alonso-Coello, Ed Mills, Diane Heels-Ansdell, Maite López-...


11

The story is plausible for two reasons: 1) Most enlisted military personnel at a time of war up to the 1950's were young sexually-active males. This has long been the case and applies to the military of many countries, not just the USA. 2) In some cities in Japan, prostitution was legalised and the prostitutes had rates of STD infection of up to 95%. ...


9

It's not clear what that figure is based on, but there is one paper which gives the "70%" number in its abstract, but as: The use of efficacious face-masks (such as surgical masks, with estimated efficacy >= 70%) in public could lead to the elimination of the pandemic if at least 70% of the residents of New York state use such masks in public consistently ...


8

Not only is this not true, but it is explicitly disproved by the sources provided by that very site. LOL! Sharks do get cancer. Further down on the same page as the claim, it says: Also see: History of known shark tumors Clicking on that link we get: Gary K. Ostrander, Keith C. Cheng, Jeffrey C. Wolf, and Marilyn J. Wolfe, Shark Cartilage, Cancer ...


8

No, unless you are obese. According to the National Institute of Health1: In conclusion, when considering the signaling pathways involved in glucose metabolism in immune cells, it is generally accepted that glucose uptake and metabolism are promoted by PI3-K and its downstream signaling molecule Akt (both in T- and B-lymphocytes). mTOR appears to be more ...


8

First, it is important to understand the terminology being used. There is the plant catnip. From the plant catnip, catnip essential oil can be obtained by steam distillation. Only a tiny fraction of the plant material is essential oil. According to Catnip as a Source of Essential Oils Oil yield ranged from 0.1 to 0.2 mL/100 g dry wt One class of ...


8

I work in Diabetes research in the UK and Can find no evidence to support the wild claims in the paper, press release and press reports. Sadly hidden away in a table in supplementary data is the fact that the result of improved glucose is a result folrom 3 people who had the vaccine compared to 3 had placebo. This very small number makes it very likely that ...


7

How much antibiotics affect gut flora is open subject, there are studies showing there is long lasting negative effect. Eg. "Gut microbiota disturbance during antibiotic therapy: a multi-omic approach" This matters, because gut bacteria does help immune system. Part of an abstract of paper published in the European Review for Medical and Pharmacological ...


6

We don't know exact numbers. As of July 17, 2020, international public health agencies have published no data regarding percentage reduction of transmission rates for Sars-COV-2 when masks are employed. Professor Benjamin John Cowling, head of Division of Epidemiology and Biostatistics at the University of Hong Kong, said there is no evidence to support ...


5

No. The idea behind BRAT is that none of the foods included are not particularly harsh on the gastrointestinal system, and are low in fibre. This is mostly true, although intolerances and allergies to Apples are reasonably common. However, there's no particular evidence that this aids recovery. Patients should eat a diet that is gentle on the system and ...


5

Chronic Lyme disease or also the Post-Lyme disease syndrome is regarded the third and last stage following an infection with Borrelia burgdorferi bacteria [1], usually acquired through tick bites. No, @Ryathal, it is NOT hard to get Lyme disease, especially not if you're in New England (incidence is over 30 in 100,000 in New England according to the CDC, ...


5

According to Medline Plus, a common cause of hemorrhoids is straining during the bowel movements. Straining can be due to constipation. PubMed (A systematic review and meta-analysis) Trials of fiber show a consistent beneficial effect for symptoms and bleeding in the treatment of symptomatic hemorrhoids. Insoluble fiber absorbs water and makes stools ...


5

These estimates are worldwide, with this being the source (AMR = AntiMicrobial Resistance): Antimicrobial Resistance: Tackling a crisis for the health and wealth of nations The 700k number was apparently calculated by extrapolation, which is not very reliable: The scientists led by Marlieke de Kraker found the Review’s global deaths estimate not credible ...


4

So the questions are: Is the Zika virus "relatively new"? From WHO.int: Zika virus is an emerging mosquito-borne virus that was first identified in Uganda in 1947 in rhesus monkeys through a monitoring network of sylvatic yellow fever. It was subsequently identified in humans in 1952 in Uganda and the United Republic of Tanzania. To compare, ...


4

Issue: Whether stopping a course of antibiotics earlier will increase the risk and spread of resistant disease causing bacteria in the body? Evidence: Traditional evidence pointed out that early stoppage of antibiotic intake decreases the chances of killing all bacteria causing infection and increases the risk of infection. By taking the full course ...


4

Yes due to community immunity. Unimmunized persons are protected—indirectly—against some infectious diseases by being surrounded by immunized persons. This is known as community (or “herd”) immunity.1 There is a 'community immunity' where the more people have the vaccine, the harder it is for the disease to spread. Conversely, vaccines have a rate ...


4

Antibiotics are designed to either kill or stop the growth of bacteria by targeting specific traits/functions of the bacteria (bacterial cells are prokaryotes) and not to target eukaryotic cells (human cells), which is rather easy due to the many differences between eukaryotes and prokaryotes. Some antibiotics target the cell wall of a bacteria (eukaryotes ...


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