The relationship between a plant-based diet and death in the elderly aged 65 and over in China

ZHENG Miao; MAO Xueyun; ZHU Feiyun; CHEN Rucheng; ZHENG Weijun

doi:10.16462/j.cnki.zhjbkz.2023.06.003

Volume 27 Issue 6

Jun. 2023

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ZHENG Miao, MAO Xueyun, ZHU Feiyun, CHEN Rucheng, ZHENG Weijun. The relationship between a plant-based diet and death in the elderly aged 65 and over in China[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2023, 27(6): 633-638. doi: 10.16462/j.cnki.zhjbkz.2023.06.003

Citation:

ZHENG Miao, MAO Xueyun, ZHU Feiyun, CHEN Rucheng, ZHENG Weijun. The relationship between a plant-based diet and death in the elderly aged 65 and over in China[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2023, 27(6): 633-638. doi: 10.16462/j.cnki.zhjbkz.2023.06.003

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The relationship between a plant-based diet and death in the elderly aged 65 and over in China

doi: 10.16462/j.cnki.zhjbkz.2023.06.003

Department of Medical Statistics, School of Public Health, Zhejiang Chinese Medical University, Hangzhou 310053, China

Funds:

Natural Science Foundation of Zhejiang Province LR20H260001

More Information

Corresponding author: ZHENG Weijun, E-mail: deardangjun@163.com
Received Date: 2022-11-30
Rev Recd Date: 2023-01-15

Available Online: 2023-07-10

Publish Date: 2023-06-10

Abstract

Abstract

Objective To investigate the relationship between a plant-based diet and death in the elderly population. Methods Based on the data of the Chinese Longitudinal Healthy Longevity and Happy Family Study (CLHLS-HF), this study analyzed the follow-up survey data of 15 300 samples from 2008 to 2018. The plant-based diet index (PDI) and unhealthy plant-based diet index (UPDI) were used as indicators to evaluate the plant-based diet, which was grouped according to the quintile and divided into five groups: Q1, Q2, Q3, Q4, and Q5. A Cox survival analysis was used to construct a model to study the effects of PDI and UPDI on the death of individuals aged 65 years and above. Results After adjusting for confounding factors such as demographic characteristics, health behaviors, and underlying diseases, a statistically significant association was found between PDI and death (P < 0.001). Compared with Q1(control group), Q3 (HR=0.900, 95% CI: 0.832-0.974), Q4 (HR=0.872, 95% CI: 0.804-0.947), and Q5 (HR=0.779, 95% CI: 0.715-0.850) reduced the risk of death by 10.00%, 12.80%, 22.10%, respectively, while Q2 was not statistically significant. The UPDI was statistically associated with death (P < 0.001), with Q3 (HR=1.182, 95% CI: 1.080-1.294), Q4 (HR=1.206, 95% CI: 1.101-1.321), and Q5 (HR=1.210, 95% CI: 1.104-1.327) increased the risk of death by 18.20%, 20.60%, and 21.00%, respectively, compared with Q1. And Q2 was not statistically significant. With the increase in PDI, the mortality risk of the population showed a downward trend; with the decrease in UPDI score, the mortality risk of the population showed an upward trend (P_trend < 0.001). Conclusion Based on the CLHLS-HF population, a reduced intake of plant foods, especially healthy ones, increases the mortality risk in the elderly.
- Plant-based diet,
- Plant-based diet index,
- Unhealthy plant-based diet index,
- Senior citizen,
- Death,
- Chinese Longitudinal Healthy Longevity and Happy Family Study

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References(11)

References

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