The article examines the effectiveness of supplements marketed to improve brain health and cognitive function, particularly among adults over 50. It highlights that many of these products make unproven claims, as they are not required to demonstrate efficacy unless they claim to treat specific diseases like Alzheimer’s.
Key Points:
- Diet vs. Supplements: A healthy diet is linked to reduced cognitive decline, but there's little evidence that isolated nutrients in supplement form provide the same benefits.
- Lack of Strong Evidence: Most "brain-boosting" supplements lack robust research from randomized controlled trials (RCTs), which are the gold standard for proving efficacy.
- Analysis of Popular Ingredients:
- Omega-3 Fatty Acids: While diets rich in fish are associated with cognitive benefits, omega-3 supplements have not consistently shown the same effects.
- Ginkgo Biloba: The large-scale GEM study found no significant benefit in preventing cognitive decline.
- Vitamins: Observational studies suggest possible associations, but RCTs are lacking, making claims about brain health uncertain.
- Apoaequorin (Prevagen): A protein derived from jellyfish, but it is broken down in digestion and unlikely to have an effect. Most supporting research comes from the product's manufacturer.
- Ashwagandha: Some small studies suggest potential benefits, but evidence remains insufficient.