Fish oil capsules do not improve brain memory, study finds

Fish oil capsules are among the most commonly used dietary supplements. Fish oil contains a high amount of omega-3 fatty acids which are considered very important for health. Most people use them to improve brain health especially memory but does this really happen?

The answer is no. This was revealed in a medical study conducted in the United States. Researchers at the University of Southern California reported that fish oil capsules do not improve memory, brain cells or overall brain function.

The study included 365 participants aged between 55 and 80 who were free from dementia, a disease that causes cognitive decline. All participants had low levels of omega-3 fatty acids in their bodies and were affected by at least one risk factor for dementia such as obesity, a sedentary lifestyle, high blood pressure or high cholesterol.

The participants were divided into two groups. One group was given fish oil capsules daily for two years while the other group received a placebo. Both groups were also given vitamin B complex supplements. All participants underwent MRI scans, blood tests and cognitive assessments.

The results showed that although omega-3 levels increased in the brains of those taking fish oil capsules, there was no improvement in brain function or memory. Researchers found no significant difference between the two groups. They stated that omega-3 supplements are like a blunt tool that is not very effective.

They further explained that while omega-3 levels increased in the brain, cognitive performance did not improve.

According to the researchers instead of relying on such supplements, brain health is better supported through exercise, stress reduction, quality sleep and natural sources of omega-3 fatty acids such as fish, nuts and seeds.

They concluded that omega-3 obtained from natural foods is more beneficial for the brain. The study findings were published in the journal eBioMedicine.