Co-morbid mental health problems among persons living with type 2 diabetes have a significant influence on diabetic persons’ self-care and, ultimately, quality of life. However, the mechanisms linking the co-morbid mental health problems of type 2 diabetes patients to the decreased quality of life are not fully understood. This study examined the direct and indirect influences of co-morbid depression and anxiety on the quality of life of 115 persons living with type 2 diabetes, using a cross-sectional survey design. Frequencies and percentages were used to summarize the data, and the Pearson correlation was used to determine the bivariate association between the study variables. PROCESS Macro in SPSS was used for mediation analyses. The findings show that depression and anxiety had significant negative correlations with the quality of life of persons living with type 2 diabetes. However, only depression had a significant negative correlation with social support. On the contrary, social support significantly and positively correlated with quality of life. The mediation analysis shows that social support partially mediated the relationship between depression and quality of life after adjusting for the sex of the participants. However, social support did not have a significant mediation effect on the link between anxiety and quality of life after adjusting for the sex of the participants. The availability of social support, especially peer support, could buffer the negative emotional experiences associated with living with type 2 diabetes and improve the quality of life for persons living with this health condition.

2型糖尿病患者并存的心理健康问题对糖尿病患者的自我保健以及最终的生活质量具有重大影响。但是，尚不完全了解将2型糖尿病患者并存的心理健康问题与生活质量下降联系起来的机制。本研究采用横断面调查设计，研究了共病性抑郁和焦虑对115名2型糖尿病患者生活质量的直接和间接影响。频率和百分比用于汇总数据，皮尔森相关性用于确定研究变量之间的双变量关联。SPSS中的PROCESS Macro用于中介分析。研究结果表明，抑郁症和焦虑症与2型糖尿病患者的生活质量具有显着的负相关性。但是，只有抑郁与社会支持之间存在显着的负相关。相反，社会支持与生活质量显着正相关。调解分析表明，在根据参与者的性别进行调整之后，社会支持部分地调解了抑郁与生活质量之间的关系。然而，在对参与者的性别进行调整之后，社会支持对焦虑与生活质量之间的联系没有显着的中介作用。社会支持尤其是同伴支持的可用性，