Weight-class combatants who are able to cut the most water weight for weigh-ins, then get it back before fight time, gain a size advantage. That makes the ability to cut weight a basic component of fight competition. But should it be, and does it need to be?
There IS an alternative. Instead of having fighters actually go through the process of losing water weight, blood samples could be used to measure the water content of bodily fluids and calculate how much additional water weight the person could safely lose, without their actually having to lose it. Subtract that amount of "excess" water weight from the fighter's scale-weight to get their weigh-in weight.
This water-controlled weigh-in weight would arguably be a fairer measure of fighting weight than the weight-cutting system produces. Fighters with the same water-controlled weigh-in weight would have the same tissue mass, sans fluids. Thus a fighter who has been exceptionally good at cutting and regaining water weight, like current UFC featherweight champ Jose Aldo, will lose his size advantage. Aldo (who needs no size advantage) has been consistently larger than his opponents come fight time. Under a water controlled system, they would be the same size, which seems right. Is an ability to lose water weight a fighting skill? No. So why should it be rewarded inside the Octagon?
The biggest reason to switch to water-controlled weigh-in weights is to avoid the health risks of severe dehydration. Less water makes bodily fluids thicker, which can put tremendous stress on the circulatory system and other organ systems, depending on how extreme the water loss is. That combatants at all levels are engaging in this practice, even in high school wrestling, means a huge price is being paid by a huge number of people just to be able to compete.
More at my Error Theory blog:
http://errortheory.blogspot.com/2011/10/eliminate-weight-cutting-from-combat.html
Soon everyone will to look back on the late 20th and early 21st centuries as the bad old days, when everybody had to go through hell just to get in the door for weight-group competition. Good riddance. Training and fighting are grueling enough.
An account of Jose Aldo's struggle to make weight for the Mark Hominick fight (where he gassed, but still won):
http://mmajunkie.com/news/25482/ufc-champ-jose-aldo-knows-featherweight-division-wont-be-a-permanent-home.mma
Dr. Benjamin's Q and A on the medical dangers of weight cutting:
http://mmajunkie.com/news/5157/ask-the-doc-dr-benjamin-on-mmaboxing-safety-weight-cutting-and-drug-tests.mma










