Eating disorders remain a "huge" issue in climbing, Olympic gold medallist Janja Garnbret said, even as new regulations meant to stop dangerously underweight athletes competing came into effect earlier this month. Climbers benefit from a higher strength-to-weight ratio and many resort to losing weight rather than getting stronger, not realising the damage that could do to their health. Under the regulations, in force since April 9, climbers provide details of their height, weight, heart rate and blood pressure, and national federations either issue a health certificate based on those parameters, or request more testing.