INSIDE: Intervention in Nutritional Supplementation to Improve Cognitive Decline in Elderly.

Participants in this arm will receive a daily dose of a nutritional supplement for 90 consecutive days. The supplement is administered orally and aims to improve cognitive performance in older adults with signs of cognitive decline. Participants will also complete cognitive assessments before and after the intervention.

Participants in this arm will receive a daily dose of an inert placebo that matches the supplement in appearance, taken orally for 90 consecutive days. The placebo is used as a control to compare the effects of the nutritional supplement on cognitive performance. Participants will undergo the same cognitive assessments as the experimental group.