
How to Improve Your Memory & Cognitive Function at Any Age | Dr. Alan Castel
- Good learning happens through errors: Just seeing something many times doesn't guarantee remembering it. Example: The Apple logo – most people can't recall whether the bite is on the left or right.
- Active recall without looking (e.g., drawing the logo from memory) leads to better learning than passive repetition.
- Dr. Castel explains that memories are never completely accurate – they are constantly reconstructed.
- Metacognition (awareness of one's own thinking) is crucial: We often think we know something when we don't.
- Desirable difficulties: Learning should be challenging, not too easy. Mistakes and their correction enhance memory retention.
- Curiosity is a powerful driver: Older adults remember better what they are genuinely curious about.
- Balanced training: Not just crossword puzzles (which strengthen existing knowledge), but also new activities (e.g., a new hobby, different routes to work) promote neuroplasticity.
- Memory decline is not inevitable. Some abilities (e.g., vocabulary) remain stable or even improve.
- Superagers show that staying mentally fit into old age is possible – through physical exercise, social connections, and a positive attitude toward aging.
- Exercise (e.g., 30–40 minutes of brisk walking three times a week) can increase hippocampal volume and improve memory.
- Subjective age (how old you feel) is a better predictor of lifespan than chronological age.
- John Wooden's two most important words: Love and Balance – surround yourself with people you love and do what you love.
- Balance is also physical: Simple exercises like standing on one leg train balance and prevent falls, which often lead to cognitive decline.
- Dr. Castel emphasizes that wisdom and emotional regulation can increase with age. Older adults are often more resilient and focused on what matters.
- Social connectedness and curiosity remain lifelong important factors for mental health.
This summary is based on the conversation between Andrew Huberman and Dr. Alan Castel about memory, learning, and successful aging.






