Key Takeaways
- There isn’t enough scientific evidence suggesting that daily omega-3 supplements help lower blood sugar (glucose) levels.
- High blood sugar is a common trait of diabetes, a lifelong condition generally managed through medication, dietary changes, and exercise.
- If you’re thinking about taking omega-3 supplements, it’s wise to consult with your healthcare provider first to avoid potential medication interactions.
Omega-3 supplements, often referred to as fish oil supplements, contain fats found in shellfish and cold-water fish like salmon, mackerel, and tuna. Scientific findings regarding the effect of daily omega-3 intake on blood sugar levels have been mixed, with some evidence suggesting little to no impact.
Omega-3’s Inconsistent Effect on Blood Sugar
High blood sugar levels resulting from issues with insulin production or action signify diabetes. Without careful management, diabetes can lead to serious complications in areas like the eyes, kidneys, heart, and nerves.
The significance and chronic nature of diabetes have prompted extensive research into the potential benefits of supplements like omega-3 fatty acids, both as preventive measures and as adjuncts to conventional diabetes treatments.
Despite rigorous studies, the results regarding omega-3 supplementation’s impact on blood sugar levels have varied.
Some research indicates that omega-3 supplements might lower blood sugar levels, while other studies report minimal or no effect.
What Do the Scientific Studies Show?
A 2024 study published in Current Nutrition Reports highlighted conflicting results regarding omega-3’s impact on glucose levels.
Key details from the study include:
- The review considered 30 randomized controlled trials involving primarily adults with different types of diabetes—type 1, type 2, and gestational.
- Participants received various doses of omega-3 supplements over six weeks to a year.
- Some individuals noted a decrease in fasting blood glucose levels, while others showed no significant changes.
Researchers pointed out that variations in trial outcomes could result from factors such as:
- Participant numbers in each trial
- Duration of trials
- Participants’ age and their length of diabetes experience
- Dosage of omega-3 supplements
Other studies further explored the uncertain role of omega-3 supplementation on blood glucose levels:
- A 2022 analysis looked at 30 trials with diabetic and non-diabetic participants, suggesting omega-3 intake significantly reduced fasting blood sugar.
- A 2020 study involving just over 800 adults with type 2 diabetes found that omega-3 supplementation didn’t change blood sugar levels.
- A 2019 review assessed 83 trials with more than 120,000 individuals and noted minimal to no effect on glucose levels from increased omega-3 intake.
Should I Take an Omega-3 Supplement?
Overall, there’s insufficient backing for the idea that omega-3 supplements can enhance blood glucose control.
The American Diabetes Association (ADA) doesn’t broadly endorse omega-3 supplementation for diabetes patients.
Omega-3 supplements are also not officially recommended for prediabetes, which is characterized by elevated blood sugar levels that haven’t yet qualified as diabetes.
Nonetheless, some evidence, though mixed, suggests that omega-3 supplements might enhance cardiovascular health for those with diabetes and heart disease risk factors.
Your healthcare provider might suggest omega-3 supplements based on your personal heart health risks.
Speak to Your Diabetes Healthcare Provider
It’s crucial to talk to your healthcare provider before starting omega-3 supplements to ensure they’re safe and suitable for you. These supplements can interact with certain medications, especially blood thinners.
If your provider approves omega-3 supplements, side effects are generally mild. Common ones include:
- Unpleasant aftertaste
- Bad breath
- Gastrointestinal issues like nausea, discomfort, diarrhea, or heartburn
Using Diet to Improve Blood Sugar Control
For those with prediabetes or diabetes, the ADA recommends adopting a healthy eating pattern to enhance blood sugar regulation and mitigate diabetes-related complications.
Though no universal diet exists, the Mediterranean diet has been shown to suit many individuals. It’s advisable to consult with your healthcare provider first.
This diet is flexible, offers delicious options, and has been shown to lower blood sugar levels. It includes nutrient-rich foods like fruits, vegetables, lean proteins, and sources of omega-3s from both animal and plant origins, such as fatty fish, olive oil, and walnuts.
