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![]() | Animal body water was nominated for deletion. The discussion was closed on 27 March 2014 with a consensus to merge. Its contents were merged into Body water. The original page is now a redirect to this page. For the contribution history and old versions of the redirected article, please see its history; for its talk page, see here. |
isn't there any other way of calculating total body water
50 kHz would be a measurement of frequency, not current, which in this case would likely be a measurement of milliamperes —Preceding unsigned comment added by 71.203.242.111 (talk) 19:32, 11 March 2009 (UTC)Reply
Have a look at the relevant chapter in any edition of Guyton's Textbook of Medical Physiology, and see what you think.Wotnow (talk) 13:18, 29 November 2009 (UTC)WotnowReply
As a scuba instructor, I am often looking at new students and sizing up their lead "ballast" to help them become neutral underwater, given a suit of a certain thickness of buoyant Neoprene, or not (depending on water temperature). While trying to calculate BMI for myself, and remembering that I don't need lead to sink while most chubbier divers do, I wonder why not just subtract our body volume's weight in water from our weight, the difference being the lighter fats and the heavier frame. If one (like me) tends to be heavy boned, then that part of my weight should give me a lower fat% portion. Likewise with heavier tissue like muscles - for each part of bone,muscle, a part of fat is permitted, which should balance the weight w.r.t. water. I can forsee an error based on how full or empty the lungs are, maybe measure lung volume (difference full-empty) and either pick an endpoint (full or empty, easier) or midpoint (50% by volume, harder). Since we divers need to empty lungs to test buoyency, this is the simplest test given the availability of some 2m deep pool or preferably fresh water (salt water increases floatation). Maybe a bone density calculation could offer the bone aspect of the weight, but then how to tell between the muscles and the fat? Hansschulze (talk) 08:34, 7 September 2011 (UTC)Reply
Currently the first two sentences are "A significant fraction of the human body is water. This body water is distributed in different compartments in the body." I would recommend converting this to a more standard lead structure, such as:
Adjust of course as necessary but I think bringing the lead more in line with the standard is a good idea. -- Antaeus Feldspar 15:31, 19 January 2007 (UTC)Reply
I think it would be fair to have a section regarding the rumoured numbers, as often mis-cited in media such as movies or TV shows. I've often seen statements like "we're all 90% water" or whatnot used in TV shows. One such example is the Star Trek episode The Omega Glory, in which it's stated that the human body is 96% water, which, according to this article, is pretty far off. I think a lot of people believe these kinds of numbers though. TheHYPO (talk) 19:17, 15 May 2008 (UTC)Reply
[ARE THESE PERCENTAGES BASED ON WEIGHT OR VOLUME ?!]
--moved from article as it belongs here 30, 3 August 2008 (UTC) --
Water is 1 kg / 1 liter. If someone has more fat, then they would be lighter than water. If you could figure out the fat volume, you might be able to do volume math, but it seems easier to me to consider weight. Maybe an MRI or 3D ultrasound could measure the respective volume(s)? That might be a more definitive study. Hansschulze (talk) 08:44, 7 September 2011 (UTC)Reply
--Derek Andrews (talk) 18:07, 15 April 2009 (UTC)Reply
I don't know about the 90% figure, but the 60% figure fits with the statistical average we get from texts like Arthur C. Guyton's Textbook of Medical Physiology (57%) and Sheila Jackson's Anatomy & Physiology for Nurses (60%). And as illustrated by the range of dates for these publications (1976-1991), the figures are fairly uncontroversial, or they would not remain unchanged over such a long period. I don't have the relevent section for the most recent Textbook of Medical Physiology, but I'd bet it's the same.
As for the figures of 45% to 75%, that fits with Guyton, and represents the range of variation. What would be handy to obtain would be the mode, and then one would know the shape of the graph - i.e. is it right-skewed or left-skewed, or a 'bell' curve. Contrary to popular belief, nature seems to produce curves tha are skewed in one direction or the other, with some statisticians noting that bell, or 'normal' curves are often statistically forced rather than naturally derived.
As for the 90% figure, it could be one of several things. It could be straight-out wrong. Or it could be at the more extreme end of the range. Or it could be a percentage pertaining to something else, that has been extrapolated to the wrong sphere.Wotnow (talk) 13:18, 29 November 2009 (UTC)WotnowReply
Hello. I am a member of WikiProject Anatomy, a Wikipedia wide project that maintains and improves articles that fall under the scope of anatomy. Since your article has fallen under our scope, I have placed the correct templates on this talk page for verification. Upon review of this article, I'd like to make a few points, as shown:
I'm glad this article could fall within our scope, and I hope to see it grow large! Many thanks! Renaissancee (talk) 03:38, 3 June 2009 (UTC)Reply
I can't read it. Thank you! —Preceding unsigned comment added by 24.236.192.96 (talk) 11:52, 21 May 2011 (UTC)Reply
Please see Talk:Water intoxication#Water intoxication, hyponatremia, body water, etc for a collaboration suggestion. Last Lost (talk) 18:23, 6 December 2011 (UTC)Reply
I have proposed the deletion of the Animal body water article, since I see no difference between the concept of animal body water and human body water. The discussion is here and I invite you to comment. I had attempted to delete the article through WP:PROD, but the tag got removed by an IP user without comment. I would've proposed a merge, but I didn't see anything worth salvaging from that article that wasn't already in this one. Thanks! Attaboy (talk) 06:04, 6 March 2014 (UTC)Reply
In a large study of adults of all ages and both sexes, the adult human body averaged ~65% water. However, this varied substantially by age, sex, and adiposity (amount of fat in body composition). The figure for water fraction by weight in this sample was found to be 48 ±6% for females and 58 ±8% water for males.
A far more serious problem is the previous statement based on some nursing text, plus a Guyton physiology text from 1976, that adult males are 70% water. This figure is right out of the ballpark, since it is about right for newborn children. I don't think Guyton ever said that. Guyton's 12th edition of the same text (which I was able to find) says 60% for human adults, and if the text is not referenced, a better source can be found. In any case, a later Guyton edition is always better than one that is 40 years old! I've tagged both entries, and think this textbook-based sentence should be deleted entirely, unless somebody finds me figures from some up-to-date texts which have their references (making them supposedly optimal tertiary sources).
There is a well-known problem in Wikipedia with medical stuff, so the effect that the textbooks lag the best meta-analyses in the literature by some years, and aren't as accurate or authoritative. College text authors can be lazy. So WP:MEDRS prefers meta-analysis papers in the literature (which are also valid tertiary MEDRS sources) to textbooks in many cases, especially when the literature is more recent. SBHarris 22:22, 8 October 2016 (UTC)Reply
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Would it be worth mentioning Unit 731 somewhere, and their role in why we know the percentage of water in the body? It's horrifying, but important that people know how we learn these things. --192.161.114.4 (talk) 19:30, 1 December 2022 (UTC)Reply