Sugar consumption and risk of type 2 diabetes
Pro Research Analysisby 
Searched over 200M research papers
Sugar-Sweetened Beverages and Type 2 Diabetes Risk
Multiple large studies and meta-analyses consistently show that higher consumption of sugar-sweetened beverages (SSBs), such as sodas and sweetened fruit drinks, is linked to an increased risk of developing type 2 diabetes. The risk rises in a dose-dependent manner, with each additional daily serving of SSBs associated with a 13–27% higher risk of type 2 diabetes, even after accounting for body weight and other lifestyle factors Malik2010Meng2021Qin2020+2 MORE. This association is observed across diverse populations and age groups, including young adults .
Role of Body Weight and Adiposity
While some of the increased diabetes risk from sugar consumption is explained by weight gain—since excess sugar adds calories and can lead to obesity—studies show that the link between SSBs and type 2 diabetes remains significant even after adjusting for body mass index (BMI) and other measures of adiposity Lean2016Imamura2016Imamura2015. This suggests that sugar intake may have effects beyond just promoting weight gain, possibly impacting blood sugar regulation and insulin sensitivity directly.
Artificially Sweetened Beverages and Diabetes
Research on artificially sweetened beverages (ASBs) shows a weaker and less consistent association with type 2 diabetes. Some studies find a modest increase in diabetes risk with higher ASB consumption, but this link often disappears after adjusting for factors like pre-existing health conditions, dieting, and weight changes Hirahatake2019Meng2021De Koning2011+3 MORE. The evidence suggests that people who already have risk factors for diabetes may be more likely to choose ASBs, which can confound the results.
Fruit Juice and Diabetes Risk
The relationship between fruit juice consumption and type 2 diabetes is less clear. Some studies report a small increase in risk, but the findings are inconsistent and may be influenced by how diabetes is diagnosed and other dietary factors Imamura2016Imamura2015. Fruit juice does not appear to be a healthy alternative to SSBs for diabetes prevention.
Impact on Public Health
Estimates suggest that a significant number of new type 2 diabetes cases in the US and UK could be attributed to regular SSB consumption. For example, in the US, nearly 9% of new diabetes cases over a decade may be linked to SSB intake Imamura2016Imamura2015. Replacing SSBs with water, coffee, or tea is associated with a lower risk of developing diabetes Drouin-Chartier2019De Koning2011.
Added Sugar: Conceptual Clarity
The term "added sugar" is often used inconsistently in research, making it difficult to precisely define its role in diabetes risk. More clarity and consistency in how added sugar is measured and discussed are needed to advance understanding in this area .
Conclusion
The evidence strongly supports that higher consumption of sugar-sweetened beverages increases the risk of type 2 diabetes, independent of body weight. Artificially sweetened beverages and fruit juice are not recommended as healthy alternatives. Reducing intake of sugary drinks and replacing them with water or unsweetened beverages is a practical step to lower diabetes risk at both individual and population levels.
Sources and full results
Most relevant research papers on this topic