Many people regard omega-3s as “brain food” and “heart protectors,” and the science backs these high claims. Omega-3 fatty acids play a key role in many bodily functions. You can find omega-3s in:

• Fatty fish.
• Flaxseed.
• Chia seeds.
• Fish oil supplements. 

The American Heart Association recommends people eat fatty fish at least twice a week. Examples of such fish include:

• Salmon.
• Sardines.
• Mackerel.
• Herring.
• Tuna.

If you need more omega-3s, fish oil supplements can help, but you should discuss any potential medication interactions with your provider before starting. 

Because humans don’t naturally produce omega-3s, it’s important to get them from your diet. This essential fatty acid is necessary for the everyday cell function. 

Omega-3s help with:

• Heart health.
• Brain function.
• Eye health.
• Inflammation reduction. 

Omega-3s assist the heart by lessening triglycerides (a type of fat in the blood) and reducing blood pressure. Additionally, some studies show people who eat omega-3s may receive other benefits as well. 

Experts widely agree that omega-3s help reduce bodily inflammation, a key underlying cause of several chronic diseases, including cancer. While reducing inflammation is important, omega-3s may not reduce cancer risk itself.

Still, diet patterns, like the Mediterranean diet - rich in omega-3s, fiber and antioxidants from a high proportion of fruits and vegetables - can reduce cancer risk.

Additionally, there’s preliminary evidence that omega-3s may help reduce side effects from cancer treatment, specifically chemotherapy and radiation. They may also support treatment by helping preserve body weight and muscle mass.

Omega-3s for cancer patients

Omega-3s are part of an overall healthy diet, and any anti-inflammatory diet can provide benefits. However, further research is needed to determine targeted amounts for cancer prevention and reducing side effects. Consult with your provider for specific recommendations.