Nelson Dellis is a 4x USA Memory Champion and one of the leading memory experts in the world, traveling around the world as a competitive Memory Athlete, Memory Consultant and highly sought-after Keynote Speaker. As a Memory Champion, Mountaineer, and Alzheimer's Disease Activist, he preaches a lifestyle that combines fitness, both mental and physical, with proper diet and social involvement.

Born with an average memory, Nelson was inspired by the passing of his grandmother from Alzheimer's disease in 2009 to start training his memory so that he could keep his mind strong and healthy throughout his lifespan. In a short period of time, he transformed into one of the leading competitive memorizers in the world, claiming four U.S. titles along the way, the elite Grandmaster of Memory title, as well as a number of U.S. memory records for:

  • Memorizing the most names in 15 minutes - 217 names
  • Memorizing the most words in 15 minutes - 256 words
  • Memorizing the most digits in 30 minutes - 907 digits
  • Memorizing the most decks of playing cards in 30 minutes - 9.02 decks
  • (former record) Memorizing the most digits in 5 minutes - 339 digits
  • (former record) Memorizing a deck of cards in the fastest time - 40.65 seconds

Nelson is the Founder & CEO of Climb For Memory, a non-profit charity that aims to raise awareness and funds for Alzheimer's disease research through mountain climbs all around the world. Nelson has climbed numerous peaks around the world for this cause, including three times on Mt. Everest.

He is also the co-founder of the Memory League (memory training app) and co-founder/director of the Memory League Championships (formerly known as the Extreme Memory Tournament), the only digital-format, tournament-style, head-to-head style memory competition. If you want to start training your memory, try it out here:

Nelson has been featured on The TODAY Show, Fox and Friends, The Katie Couric Show,, ABC Nightline, The Dr. Oz Show, The Science Channel, Nat Geo TV, SuperBrain China, and National Geographic Magazine, among many other media outlets.

He is the author and illustrator of the kids book I Forgot Something (But I Can't Remember What It Was!) and is currently writing a memory book for adults, which will be released in 2018.