Which supplement works better to improve cognitive ability: broccoli extract or vitamin b12?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Broccoli Extract
Vitamin B12

Effectiveness Rating: Broccoli Extract vs Vitamin B12

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 broccoli extract to improve cognitive ability is much better than the evidence backing up vitamin b12. Broccoli Extract should provide positive results while vitamin b12 will not.

Confidence Rating: Broccoli Extract vs Vitamin B12

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.

Both broccoli extract and vitamin b12 have low confidence ratings. This means neither supplement has an adequate amount of research to back up this claim. A low confidence rating questions the validity of the effectiveness rating.