Reversing Aging

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This is our best chance to turn things around

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world class professionals

During the trial, you will be in the best hands available in the modern age. Our team members are seasoned, respected doctors and scientists that are on the cutting edge of their fields.

Our Founders

William Andrews, PH.D.

Dr. Bill Andrews is the President and CEO of Sierra Sciences.

As a scientist, athlete and executive, he continually pushes the envelope and challenges convention. He has spent his entire life trying to defeat the processes that cause us to age.

He has been featured in Popular Science, The Today Show, and numerous documentaries on the topic of life extension including The Immortalists in which he co-stars with Aubrey de Grey.

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Dr. Jeff Mathis, OTD, CHT

Dr. Jeff Mathis is the President of Libella Gene Therapeutics.

He employs over 190 professional staff in two states through his private practice with a focus on genetic testing and specialized therapies. Dr. Mathis formed Libella in 2017 with the sole goal of completing a human trial using AAV/hTERT to treat Alzheimer’s disease.

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world-wide recognition

We are working with scientists, hospitals, and health professionals from across the globe.