This approach will age you very fast. Value proper nutrition, appropriate exercise, and quality sleep. Be gentle and kind to yourself and others. Love yourself and others. Enriching the environment enriches the brain.
Intellectual enrichment is good for the brain.
Educated people who make novelty a way of life and continue learning age well. The key to good cognitive function at any age is novelty. There is part of the brain that is built to detect novelty and alert the rest of the brain. With that alerting comes neuritic growth and new circuit. Novelties can be new sports, painting, sculpturing, music, chess and being seriously in love.