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In short: skipping a meal lowers blood glucose levels, which can impair some cognitive functions, such as memory. Let's say that between meals you are in fasting state for 8 hours during which you do some desk work and some moderate exercise, like jogging for 1.5 hours. With such level of physical activity, your last meal and your glycogen stores in the ...


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There's no particular reason everything in nature needs to fit a normal distribution; normal distributions are just one of many different types of naturally-occurring distributions. In some cases, the other types can be transformed (e.g. by logarithms) into a normal distribution (e.g. a log-normal distribution), in other cases not so much. As to why it ...


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The histogram you show isn't a distribution of age-at-death for individuals, it's a distribution of life expectancies for different countries. The post you link takes data from a table on this page. Interpreting the histogram you posted, we see average life expectancy seems to hit a wall around 85. This does not mean that individual human life span is not ...


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1) Pain can aggravate hypotension, so painkillers may help to prevent shock. A severely wounded person with significant blood loss can develop hemorrhagic shock due to drop in blood volume and consequently drop of blood pressure and insufficient perfusion of vital organs. It is known that pain can trigger vasovagal syncope, also known as neurocardiogenic ...


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Deep inhalation and deep exhalation are informal terms and cannot be defined with lung volumes, because deep just means deeper than tidal volume. In the first part of the question deep refers to maximal: Deep inhalation that means inhaling the air with effort as much as possible (it doesn't matter from how deep exhalation) = maximal inhalation Deep ...


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Whilst it is possible that your actual core temperature is actually lower than the normally quoted average of 37.5 Celcius by a degree, it may also be the case that where you are measuring is below the average rather than your actual core temperature. For example, you might be measuring under your armpit, and perhaps due to low circulation in that area, it ...


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Tarrare had these symptoms: Grossly increased appetite, eating raw meat and other inedible things Excessive sweating with bad body odor Chronic diarrhea, which was "fetid beyond all conception" Wide jaw, abnormally large esophagus and stomach Loose skin around his cheeks and stomach Heavily stained teeth Unusually soft fair hair Apathetic temperament He ...


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Tarrare Tarrare was a showman who was renowned for his insatiable appetite including eating cats, dogs, and snakes sometimes raw. He is also said to have eaten many inedible items. At the time, he was alleged to have committed cannibalism of a 14-month-old baby and was caught in the act of cannibalising cadavers by hospital staff. He was given away as a ...


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LARGE MEALS AND ABSORPTION When consumed in usual amounts, the percent of absorbed macronutrients (carbohydrates, proteins, fats, alcohol) should not differ significantly when coming from one large or several small meals. As an example of the composition of a single large meal, let's imagine something that fits into Acceptable Macronutrient Distribution ...


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Stress response has 2 main components: Quick response, within minutes, is by the Sympathomedullary Pathway (SAM): hypothalamus > sympathetic nervous system > release of adrenaline and noradrenaline from the adrenal medulla > stimulation of the heart, dilation of the muscle arteries, constriction of the gut and skin arteries, glcogenolysis (the breakdown of ...


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There is no genetic basis for these classifications. Most human genetic diversity is in Africa. Diversity only decreases with geographic distance from this continent. There are geographic clines, not the clusters that one might call race. Here are some results from Rosenberg's 2002 Genetic Structure of Human Populations: 93-95% of variation occurs within ...


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The ratio you are referring to is indeed computed aggregating multiple observations and thus it is a "statistical average". Any individual (or couple, in this case) can have a specific ratio that differs from the average one. Many factors may affect sex ratio, among which sperm/egg viability, chromosomal aberrations, and hormones misbalance are the ones ...


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You're right that both polygeny and polymorphism contribute to the diversity of a given gene in the population correctly described what they mean individually. However, you missed that the polygeny of MHC means that the human genome has 3 different loci/genes (called MHC-I A,B & C) in the haploid genome, meaning that any given human as actually 6 ...


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There are (at least) two sides to this story. One is direct DNA damage being caused by UV-B light which happens to have photons with just the right amount of energy to interact with thymine. This has been known, and assumed not just during the 80s, but until the late 2000s to be The One major thing that causes cancer, or trouble in general (there's papers ...


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You're talking about long-wave UV, or UV-A radiation. In the 80s, experts claimed that this was a safe wavelength. Protection against UV-A was not part of sunscreen in the early days. Consequently, UV-A was (and still is) used in tanning beds due to its perceived safety over UV-B. However, a lot of research has been done since. UV-A is well understood now ...


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Yes The relative size and robustness of the jaw does appear to be strongly affected by diet, significantly more so than other parts of the skull. This is not that surprising many developmental pathways interact with physical activity. Bones in particular often rely on a certain amount of stress to develop properly. It is not all that different from low ...


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Warwick University's e-nose technology has been around for quite a while: https://warwick.ac.uk/fac/sci/eng/research/impact/electronicnose/ As far as I understand their technology, they sample gas, and analyse it using a solid state CMOS device to generate a signature signal for particular compounds/mixtures. The devices have been used in a variety of ...


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NMR spectroscopy is a technology that is used to identify molecules. So-called "NMR spectra catalogs" document the spectra of various known compounds. Acquiring these spectra requires purified samples, expensive equipment, and time. In addition to making next-generations of this technology into something that would be practical for realtime "smelling", you'd ...


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