The Link Between Sugary Drinks and Cancer Risk: What You Need to Know

Study on Sugary Drinks and Cancer Risk

Research Overview

Researchers in France conducted an investigation using data from the NutriNet-Santé study to determine whether the consumption of sugary drinks increases the risk of cancer. Over the past 25 years, the intake of sugary beverages has surged by an alarming 40%. Previous studies have established connections between sugary drinks and various health problems, including obesity, type 2 diabetes, and high blood pressure. It is estimated that sugary drink consumption contributes to approximately 178,000 deaths annually from diabetes and cardiovascular diseases. However, there has been limited research on the correlation between sugary drinks and cancer risk.

NutriNet-Santé Database

The researchers utilized the extensive NutriNet-Santé database, a valuable source for studies linking dietary habits to health outcomes. This study follows participants through an online platform, enabling researchers to gather detailed information on the types of sugary drinks consumed within a 24-hour period. In total, the database includes 97 sugary drink items and 12 artificially sweetened beverage items. The analysis focused on an average of five years of consumption data.

Participant Data and Cancer Diagnosis

Participants self-reported their cancer diagnoses, allowing researchers to explore potential links between sugary drink consumption and cancer. Furthermore, the NutriNet-Santé database is connected to the French National Health Insurance System and a specific mortality registry, providing additional data for analysis. The findings were published in the British Medical Journal.

Key Findings

The study involved over 101,000 participants and revealed an association between the intake of sugary drinks, including 100% fruit juices, and an increased risk of cancer, particularly breast cancer. Conversely, the consumption of artificially sweetened beverages did not show a significant association with cancer risk. The majority of participants were women (78%), with an average age ranging from 40 to 42 years.

Conclusions and Recommendations

While the statistical analysis was rigorous, the researchers caution that the findings indicate an association rather than a definitive cause-and-effect relationship. They suggest that the link may be attributed to the role of sugary drinks in promoting obesity, which is a recognized risk factor for cancer. Although the study concluded after five years of data collection, the researchers note that a longer review period may yield different associations, including more precise links related to specific types of beverages.

The researchers advocate for existing nutritional guidelines that recommend limiting sugary drink consumption and propose that their findings contribute to the evidence supporting taxation on sugary beverages.

Reference

Chazelas E., Srour B., Desmetz E., et al. Sugary drink consumption and risk of cancer: results from NutriNet-Santé prospective cohort. BMJ 2019;366:l2408.

Author Information

Written by Nicola Cribb, MA VetMB DVSc DipACVS.