Yes. Adolescents who sustain attention better carry higher DHA levels in their red blood cells, a new study found, confirming the omega-3 fatty acid’s role in brain health. DHA and ALA are the omega-3s best known for brain development, yet dietary omega-3 intake is low worldwide. These days people are more engaged in mentally demanding tasks. It means that humans have to go through a prolonged educational process before they start working. It means that the need for higher mental abilities keeps increasing. So many people are struggling to grasp so much information and learn so many new skills.
Therefore, there is no doubt that people are showing increasing interest in nootropics or agents that could boost their mental abilities. Some are even resorting to street drugs to boost attention span, reduce fatigue, and improve learning. However, many nootropics and most street drugs may either not work, work temporarily, or cause more damage in the long run. Thus, it is always better to use safe dietary supplements, proven to be good for brain health. It appears that one such safe and good supplement is fish oil or omega-3s.
The human brain is mainly made of fats. It is little surprise, then, that it requires a high dietary intake of fatty acids to keep working. Essential fatty acids like omega-3s cannot be produced by the body, so a high dietary intake is necessary. In addition, omega-3s have been found to have potential benefits in diabetic neuropathy treatment. Several studies have suggested that omega-3s can help improve nerve function and alleviate neuropathic pain in people with diabetes.
However, the western diet is generally deficient in omega-3s. Seafood is quite a good source of omega-3s, but in the western world, people get their supply of fats from animal fats and vegetable seed oil. In the new study, researchers decided to find out if high omega-3 intake can boost mental functions or if it is just another hype. Fortunately, their findings suggest that omega-3 fatty acid is really good for cognition.
The study was done on 372 adolescents with an average age of about 14 years. In the study, participants underwent computer tests to estimate their ability to sustain attention and impulsivity. For learning, the ability to sustain attention for longer and lower impulsivity are vital. Additionally, researchers tested the concentration of omega-3 fatty acids in their red blood cells. They particularly focused on DHA and ALA, two omega-3 fatty acids known to play an important role in brain health.
They found that those with a higher ability to sustain attention also had a higher DHA concentration in their blood cells. This confirms that those with higher DHA intake have better learning abilities. DHA also seems to reduce impulsivity and thus reduce the risk of ADHD in adolescents. When it comes to ALA, they did not find that it had many benefits in promoting attention, but it did reduce impulsivity. So, ALA can also be good for managing ADHD in young adults.
Here it is vital to understand that ALA is generally high in various vegan sources of omega-3s like chia seed, flaxseed, and so on. However, DHA is mainly found in seafood. Although the body can produce DHA by converting ALA, this ability to convert ALA to DHA is quite limited.
It means that those looking to boost their brain health would benefit considerably by increasing their intake of fatty fish. Additionally, consuming seeds or seed oil rich in omega-3 fatty acids may also have benefits, though benefits would be less pronounced. This is not the first study to show that omega-3s are good for brain health. However, it is among the few studies to confirm that higher omega-3 intake is good for adolescents.
Frequently asked questions
Does omega-3 improve attention in teenagers?
In this study, yes. Researchers tested 372 adolescents, average age about 14, with computer tests of sustained attention and impulsivity, then measured omega-3 levels in their red blood cells. The teens who held their attention longest carried the most DHA. Sustained attention and low impulsivity are the two skills learning depends on, so DHA status matters for any student.
Can omega-3 help with ADHD?
The study points that way. Higher DHA went with lower impulsivity, which ties it to a lower ADHD risk in adolescents. ALA did little for attention, but it also lowered impulsivity, so it can help in managing ADHD in young people too. Know what was measured, though: attention and impulsivity scores, not an ADHD diagnosis and 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 plant sources such as chia seed and flaxseed. DHA comes mainly from seafood. The body can turn some ALA into DHA, but that conversion is limited, so a vegan diet rich in ALA does not reliably deliver the DHA this study linked to better attention.
What foods are the best source of DHA?
Seafood, and fatty fish above all. That is the practical takeaway: anyone who wants the brain benefit tied to DHA gets it most directly by eating 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, built on animal fats and vegetable seed oils, 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 the diet to keep working. Essential fatty acids such as omega-3s cannot be made by the body; they have to come from food. When the diet runs short, as Western diets usually do, the brain works with less of the raw material it is made from.
Dr. Gurpreet Singh Padda, MD, MBA, MHP
