A recent study published in Frontiers in Nutrition investigated whether lutein and zeaxanthin (Lute-gen®), two nutrients found in foods like spinach, kale, corn, and egg yolks, can improve cognitive function in adults experiencing mild memory complaints. These carotenoids are known for their antioxidant and anti-inflammatory properties and are found in high concentrations in the brain.
What Was the Study About?
Researchers conducted a 6-month randomized, double-blind, placebo-controlled trial with 90 participants aged 40–75 years. Half of the participants took daily supplements containing 10 mg of lutein and 2 mg of zeaxanthin (Lute-gen®), while the other half received a placebo. The goal was to see if these nutrients could enhance cognitive performance, particularly memory and learning.
Key Findings
- Improved Visual Memory and Learning: Participants who took lutein and zeaxanthin showed significant improvements in visual episodic memory (e.g., recognizing pictures) and visual learning (e.g., recalling locations in a computerized task).
- No Impact on Other Cognitive Areas: The supplements did not improve other cognitive tasks, mood, or self-reported measures of memory and executive function.
- Well-Tolerated: The supplements were safe, with no serious side effects reported.
Why Does This Matter?
Visual memory and learning are critical for daily life and may play a role in preventing cognitive decline. Previous research has linked better visual memory to a lower risk of conditions like mild cognitive impairment and other brain health conditions. This study suggests that lutein and zeaxanthin could be a simple, natural way to support brain health.
What’s Next?
While the results are promising, the study had limitations:
- It only assessed visual memory and learning over a 6-month period.
- Real-world implications of these improvements remain unclear.
- More research is needed to explore the effects of lutein and zeaxanthin in people with diagnosed cognitive impairments.
Future studies could investigate longer supplementation periods, different doses, and the mechanisms behind these nutrients’ effects on the brain.
Takeaway
If you’re looking for ways to support your memory, consider adding Lute-gen® to your daily supplement program.