Fish oil has long been known for its health benefits, from lowering cholesterol to improving brain function. And now, a new study from the University of Georgia suggests that omega-3 and omega-6 fatty acids found in fish oil may also help prevent a variety of cancers.

The study, which analyzed data from over 250,000 people, found that higher levels of omega-3 and omega-6 fatty acids were associated with a lower risk of developing cancer. The results of the study were published in the International Journal of Cancer.

Lead author Yuchen Zhang, a doctoral student at UGA’s College of Public Health, stated that “Higher omega-3 and omega-6 levels were associated with lower rates of cancer,” and recommended that individuals focus on incorporating more of these fatty acids into their diets.

Participants with higher levels of omega-3s were found to have lower rates of colon, stomach, and lung cancer, as well as other digestive tract cancers. Similarly, high levels of omega-6 fatty acids were associated with lower rates of 14 different types of cancer, including brain, malignant melanoma, and bladder cancer.

The study, which followed participants for over a decade, found that the benefits of omega-3 and omega-6 fatty acids were independent of other risk factors such as BMI, alcohol use, and physical activity.

Omega-3 and omega-6 fatty acids are essential for human health and are found in foods like fatty fish, nuts, and plant oils. However, many individuals do not consume enough of these foods to meet recommended levels, leading them to turn to fish oil supplements.

While fish oil supplements have been shown to have various health benefits, including reducing the risk of high cholesterol and heart disease, the decision to take them may not be suitable for everyone. The study found that high levels of omega-3 fatty acids were associated with a slightly higher risk of prostate cancer, indicating that the benefits of fish oil may vary among individuals.

Overall, the research suggests that incorporating more omega-3 and omega-6 fatty acids into one’s diet may help reduce the risk of developing certain types of cancer. Further studies are needed to explore the specific mechanisms behind these findings and to determine the optimal levels of these fatty acids for cancer prevention.