Which supplement works better to improve cognitive ability: docosahexaenoic acid (dha) or folic acid?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Docosahexaenoic Acid (DHA)
Folic Acid

Effectiveness Rating: Docosahexaenoic Acid (DHA) vs Folic Acid

The effectiveness rating is a measure of the supplements' ability to improve cognitive ability. This rating answers the question of whether or not a supplement does what it claims. The evidence backing up folic acid to improve cognitive ability is much better than the evidence backing up docosahexaenoic acid (dha). Folic Acid should provide positive results while docosahexaenoic acid (dha) will not.

Confidence Rating: Docosahexaenoic Acid (DHA) vs Folic Acid

Another factor to take into account when comparing supplements is the confidence rating. This rating is a measure of how valid each supplement's effectiveness rating is. Remember, the confidence rating is a measure of how much you can trust the effectiveness rating. This rating is based on how many studies are included in the database on a supplement's claims. Ideally, you want a high effectiveness AND confidence rating.

Docosahexaenoic Acid (DHA)'s confidence rating is higher than folic acid's. This means docosahexaenoic acid (dha)'s effectiveness rating from above is more valid. This does not necessarily mean that docosahexaenoic acid (dha) works better, it simply means the evidence (included in this database) backing up docosahexaenoic acid (dha) is more established.