Yes. Teens who hold their attention better carry higher DHA levels in their red blood cells. A new study found this, and it backs the omega-3 fatty acid’s role in brain health. DHA and ALA are the omega-3s best known for brain growth. Yet people eat too little omega-3 all over the world. Today, more of our work is mental work. People spend years in school before they start a job. The demand on the brain keeps rising. Many people struggle to take in so much information and learn so many new skills.
No wonder more people are turning to nootropics (“brain boosters”). Some even use street drugs to focus longer, fight tiredness and learn faster. But many nootropics and most street drugs may not work. Others may work for a short time or do more harm over time. It is always better to use safe supplements that are proven good for the brain. Fish oil, or omega-3s, looks like one of them.
The human brain is made mostly of fat. So it is no surprise that it needs plenty of fatty acids from food to keep working. The body cannot make essential fatty acids like omega-3s. They have to come from what you eat. Omega-3s may also help with diabetic neuropathy treatment. Several studies suggest omega-3s can help nerves work better. They may also ease nerve pain in people with diabetes.
But the western diet runs short on omega-3s. Seafood is a good source. Yet in the West, most fat comes from animal fats and vegetable seed oil. In the new study, researchers asked a simple question. Does more omega-3 boost the mind, or is it just hype? The findings suggest omega-3 fatty acid is really good for thinking.
The study looked at 372 teens with an average age of about 14 years. In the study, the teens took computer tests that measured how long they could focus and how impulsive they were. To learn well, you need to focus longer and act on impulse less. The researchers also measured omega-3 fatty acids in the teens’ red blood cells. They looked most at DHA and ALA. Both are omega-3 fatty acids known to matter for brain health.
Teens who focused longer also had more DHA in their blood cells. This confirms that more DHA goes with better learning. DHA also seems to lower impulsivity. That lowers the risk of ADHD in teens. ALA did not do much for attention. But it did lower impulsivity. So ALA can also help manage ADHD in young adults.
Here is the key point. ALA is high in plant sources of omega-3s, like chia seed and flaxseed. DHA is found mainly in seafood. The body can turn some ALA into DHA. But it can only do a little of that.
So if you want a sharper brain, eat more fatty fish. Seeds or seed oil rich in omega-3 fatty acids may help too, but less. This is not the first study to show omega-3s are good for the brain. But it is one of the few to confirm that more omega-3 is good for teens.
Frequently asked questions
Does omega-3 improve attention in teenagers?
In this study, yes. Researchers tested 372 teens, average age about 14. Computer tests measured focus and impulsivity. Then the team measured omega-3 levels in their red blood cells. The teens who held their attention longest carried the most DHA. Learning depends on two skills: steady focus and low impulsivity. So DHA levels matter for any student.
Can omega-3 help with ADHD?
The study points that way. Higher DHA went with lower impulsivity. That ties it to a lower ADHD risk in teens. ALA did little for attention, but it also lowered impulsivity. So it can help manage ADHD in young people too. Know what was measured, though. The study scored attention and impulsivity. It did not diagnose ADHD, and it was not a treatment trial.
What is the difference between DHA and ALA?
Both are omega-3 fatty acids tied to brain health. ALA comes mostly from plants such as chia seed and flaxseed. DHA comes mainly from seafood. The body can turn some ALA into DHA, but only a little. So a vegan diet rich in ALA does not reliably give you the DHA this study linked to better focus.
What foods are the best source of DHA?
Seafood, and fatty fish above all. That is the takeaway. If you want the brain benefit tied to DHA, eat more fatty fish. Seeds and seed oils rich in omega-3s help too. But they supply ALA, and the benefit is smaller. The typical Western diet is built on animal fats and vegetable seed oils. It runs short on omega-3s.
Why does the brain need omega-3 fatty acids?
The brain is built mainly from fat. So it needs a steady supply of fatty acids from food to keep working. The body cannot make essential fatty acids such as omega-3s. They have to come from food. Western diets usually run short. Then the brain works with less of the raw material it is made from.
Dr. Gurpreet Singh Padda, MD, MBA, MHP
