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Home Science & Environment Medical Research

Lifetime body weight patterns may affect kidney cancer risk

March 24, 2025
in Medical Research
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Excess weight in midlife is a known risk factor for kidney cancer, but new research indicates that weight patterns throughout life may also affect an individual’s likelihood of developing this malignancy. The findings are published online in Cancer.

To assess weight patterns and their associations with kidney cancer and its different subtypes, investigators analyzed information on 204,364 individuals from the NIH-AARP Diet and Health Study, including body mass index (BMI) data when participants entered the study (an average age of 61.6 years), and prior BMI recordings at 18, 35, and 50 years of age.

The team noted that there were 1,425 cases of kidney cancer, or renal cell carcinoma (RCC), among the study’s participants, with 583 having aggressive RCC and 339 having fatal RCC. The researchers also recorded the different subtypes of RCC, including clear cell RCC (541 patients), papillary RCC (146 patients), and chromophobe RCC (64 patients).

Higher BMI at any of the ages assessed was linked with higher risks of overall RCC and all subtypes (except chromophobe RCC), with a 10–40% higher risk for each 5-unit increase in BMI. Similar increased risks were linked to weight gain during adulthood that resulted in overweight or obesity, compared with maintaining a normal BMI.

Also, long-term excess weight was associated with higher risks of overall RCC, aggressive RCC, fatal RCC, and clear cell RCC, but not papillary RCC and chromophobe RCC.

Weight loss in which BMI was reduced by at least 10%, particularly later in life, was associated with a lower risk of RCC. Specifically, weight loss from age 18–35 years and after age 50 years was associated with 21% and 28% reductions in RCC incidence, respectively.

“These findings emphasize that maintaining a healthy weight across one’s lifetime is important for reducing RCC risk. More importantly, weight loss, even later in life, may offer protective benefits,” said lead author Zhengyi Deng, Ph.D., of Stanford University School of Medicine.

“We should support initiatives that promote healthy weight maintenance and weight-loss strategies. Some of these include lifestyle interventions, weight-loss programs, and emerging medical treatments for obesity; however, individuals should consult with their health care providers prior to initiation of any plan.”

More information:
Zhengyi Deng, et al. Lifetime body weight patterns, weight loss, and renal cell carcinoma subtypes, Cancer (2025). DOI: 10.1002/cncr.35763

Citation:
Lifetime body weight patterns may affect kidney cancer risk (2025, March 24)
retrieved 24 March 2025
from https://medicalxpress.com/news/2025-03-lifetime-body-weight-patterns-affect.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.



bmi
Credit: Unsplash/CC0 Public Domain

Excess weight in midlife is a known risk factor for kidney cancer, but new research indicates that weight patterns throughout life may also affect an individual’s likelihood of developing this malignancy. The findings are published online in Cancer.

To assess weight patterns and their associations with kidney cancer and its different subtypes, investigators analyzed information on 204,364 individuals from the NIH-AARP Diet and Health Study, including body mass index (BMI) data when participants entered the study (an average age of 61.6 years), and prior BMI recordings at 18, 35, and 50 years of age.

The team noted that there were 1,425 cases of kidney cancer, or renal cell carcinoma (RCC), among the study’s participants, with 583 having aggressive RCC and 339 having fatal RCC. The researchers also recorded the different subtypes of RCC, including clear cell RCC (541 patients), papillary RCC (146 patients), and chromophobe RCC (64 patients).

Higher BMI at any of the ages assessed was linked with higher risks of overall RCC and all subtypes (except chromophobe RCC), with a 10–40% higher risk for each 5-unit increase in BMI. Similar increased risks were linked to weight gain during adulthood that resulted in overweight or obesity, compared with maintaining a normal BMI.

Also, long-term excess weight was associated with higher risks of overall RCC, aggressive RCC, fatal RCC, and clear cell RCC, but not papillary RCC and chromophobe RCC.

Weight loss in which BMI was reduced by at least 10%, particularly later in life, was associated with a lower risk of RCC. Specifically, weight loss from age 18–35 years and after age 50 years was associated with 21% and 28% reductions in RCC incidence, respectively.

“These findings emphasize that maintaining a healthy weight across one’s lifetime is important for reducing RCC risk. More importantly, weight loss, even later in life, may offer protective benefits,” said lead author Zhengyi Deng, Ph.D., of Stanford University School of Medicine.

“We should support initiatives that promote healthy weight maintenance and weight-loss strategies. Some of these include lifestyle interventions, weight-loss programs, and emerging medical treatments for obesity; however, individuals should consult with their health care providers prior to initiation of any plan.”

More information:
Zhengyi Deng, et al. Lifetime body weight patterns, weight loss, and renal cell carcinoma subtypes, Cancer (2025). DOI: 10.1002/cncr.35763

Citation:
Lifetime body weight patterns may affect kidney cancer risk (2025, March 24)
retrieved 24 March 2025
from https://medicalxpress.com/news/2025-03-lifetime-body-weight-patterns-affect.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.


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