The Global Association of Mixed Martial Arts (GAMMA) is committed to promoting clean and safe competition for all athletes, which is why education on the issue of weight cutting and hydration in combat sports is so important.

Weight cutting (extreme weight loss obtained through severe dehydration) has commonly been used by athletes to ensure they meet the required weight for competition. This dangerous practice has historically been misunderstood by athletes and coaches with regard to any supposed benefits it brings.

The old belief was that athletes who weight cut would see an increase in size, power, and athletic performance. The reality is that weight cutting poses a great health risk, increasing the possibility of acute cardiovascular problems, ischaemic disease, strokes, and brain injuries. It also increases mental and physical fatigue and can leave long-lasting consequences such as kidney failure, eating disorders, and more.

GAMMA World Championships Amsterdam

Our underlying mission is to make sure that all our athletes are able to compete safely. Therefore, at the GAMMA World Championships in Amsterdam from 23-27 March, we will provide education on weight cutting and hydration to athletes and coaches. In addition, following the usual weigh-ins, several athletes will be randomly selected to undergo weight and urine specific gravity testing. Tests will be performed using the Siemens Multistix 10 SG and will be carried out by fully qualified medical professionals.

The full testing protocol can be seen below:

Our goal is to protect the well-being of our athletes. They will all be given the opportunity to ensure they pass the tests and are fit and safe to compete.

For more information, visit