There has always been focus on the problem of rapid weight loss. You can find studies from the 90ies.

If not satisfied with the list below try this search.

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Rapid weight loss is highly prevalent in judo competitors. The level of aggressiveness in weight management behaviors seems to not be influenced by the gender or by the weight class, but it seems to be influenced by competitive level and by the age at which athletes began cutting weight.

Artioli, Gualano, Franchini, Scagliusi, Takesian, Fuchs, Lancha Jr, Nov 2009: Medicine and Science in Sports and Exercise – Prevalence, Magnitude, and Methods of Rapid Weight Loss among Judo Competitors

These findings suggest that weight loss during the growth spurt phase may adversely impact normal development. It also suggested that weight loss during the junior high school years may not be a strategy to bring about better competition results.

Yoshida, Hayashida, Sakurai, Kawazaki, June 2024: Frontiers in Sport and Active Living – Evidence of weight loss in junior female judo athletes affects their development

Future studies should explore the long-term effects of weight cycling on the mental health of judo athletes and other athletes participating in weight-classified sports.

Lakicevic, Thomas, Isacco, Tcymbal, February 2024: European Review of Applied Psychology – Rapid weight loss and mood states in judo athletes: A systematic review

Future research could focus more on long-term effects of disordered eating in athletic populations, as the majority of studies present its direct consequences in health and performance, leaving a knowledge gap regarding the nutritional and health problems that athletes may face after completion of their athletic life.

Kontele, Vassilakou, August 2021: Children – Nutritional Risks among Adolescent Athletes with Disordered Eating