Evidence supporting the use of: Fish
For the health condition: Concentration (poor)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Fish, particularly fatty fish like salmon, sardines, and mackerel, are rich sources of omega-3 fatty acids, especially docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). Numerous scientific studies have investigated the impact of omega-3 fatty acids on cognitive function, including concentration and attention. DHA is a primary structural component of the human brain and is crucial for maintaining normal brain function. Deficiencies in omega-3s have been linked to cognitive deficits and poorer attention in both children and adults.

Randomized controlled trials and observational studies have found that supplementation with fish oil (high in DHA and EPA) can improve cognitive performance, including aspects of attention and concentration, particularly in populations with low baseline omega-3 intake or cognitive impairment. For example, some studies in children with attention deficit hyperactivity disorder (ADHD) have shown modest improvements in attention span with omega-3 supplementation. In older adults, higher fish consumption and omega-3 intake have been associated with reduced cognitive decline.

While the effects are generally modest and may not apply to everyone, the scientific consensus is that regular fish consumption or omega-3 supplementation supports overall brain health and may help with concentration, especially in those who are deficient. Thus, the use of fish to support concentration is primarily justified by scientific evidence, though the magnitude of benefit can vary.

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