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The most up to date collection of scientifically based health facts.
Includes simple to understand definitions and complete references


 

W


Water
Weight Loss


Water
:

A sign that your body has enough water is the feeling that you are having to force water down in order to meet a certain quota. It is important to drink water when you are thirsty, but it isn’t necessary to drink 8-8oz. glasses or water a day if you aren’t exercising or sweating a lot.

See the below statements from CNN Medical Correspondent Elizabeth Cohen, How much water do we really need? May 24, 2002 Posted: 1:07 PM EDT (1707 GMT):
“Well, if you're not sweating a lot during your show (the day), then you probably don't need quite as much water as you think you do. This eight eight-ounce glasses a day it turns out, after talking to the USDA, the National Academy of Sciences, the National Institutes of Health, people at various universities, they say, you know what, this appears to be kind of a myth. We can't find a single study that says that that's what people ought to do.”

"After 10 months of careful searching I have found no scientific evidence that supports '8x8' (drinking 8, 8 ounce glasses of water daily)," “there is no scientific evidence to back up this advice, which has helped create a huge market for bottled water.” Dr. Heinz Valtin of Dartmouth Medical School in New Hampshire. Reference: No Need to Guzzle All That Water, Expert Says. Reuters Article: Fri Aug 9, 7:40 PM ET By Maggie Fox, Health and Science Correspondent WASHINGTON.

”… the National Academy of Sciences has put together a panel of experts to do nothing but look at how much water do we need.”(Current study, results due in March 2003)

To replace daily losses of water, an average-sized adult with healthy kidneys sitting in a temperate climate needs no more than one liter [One liter is the equivalent of about four 8-ounce glasses] of fluid, according to Jurgen Schnermann, a kidney physiologist at the National Institutes of Health. Reference: Jurgen Schnermann, a kidney physiologist at The National Institutes of Health, (NIH), 9000 Rockville Pike, Bethesda, Maryland 20892.

Weight Loss: (also see Not Low-Cal)

EFAs are thought to lead to weight loss because of their ability to stimulate thermogenesis (1).  Thermogenesis is the process by which the body can "waste" calories. A number of clinical trials with obese patients have demonstrated that EFA supplementation is an effective weight loss prescription (2, 3).

References:
1. Nedergaard J, Becker W, Cannon B. Effects of dietary essential fatty acids on active thermogenin content in rat brown adipose tissue. J Nutr 113:1717-1724, 1983.
2. Mir MA, et al. The effects of evening primrose oil on erythrocyte sodium transport and obesity. In: Horrobin DF, ed. Clinical uses of essential fatty acids. Montreal: Eden Press, pp 53-61, 1982.
3. Garcia CM, Carter J, Chou A. Gamma linolenic acid causes weight loss and lower blood pressure in overweight patients with family history of obesity. Swed J Biol Med 4:8-11, 1986.

 

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