Are you stuck in this vicious cycle
that is making you ill?

Nearly every person who walks into my office has this vicious cycle as part of the root cause of their disease. Oddly, it is rarely addressed or understood by most practitioners. I call this vicious cycle “The Fight or Flight Loop.” It is both caused BY disease and the cause OF disease.

Take this quiz to find out if your body is stuck in “The Fight or Flight Loop.”


At Functional Longevity Institute we provide you with personalized solutions to your chronic illness or other concerns. We can help guide you with:

  • Diabetes
  • Thyroid Disorder
  • Digestive Issues
  • Energy Concerns
  • Stress tolerance issues
  • Sleep problems
  • Weight gain
  • Autoimmune disorders
  • Memory challenges
  • Aches and pains

Our Unique Approach

At Functional Longevity Institute, we are excited to provide you with individualized treatments and solutions to treat your chronic illness or other concerns. Our approach is to focus on helping you to not only feel better today, but to feel better long into the future by pairing your needs with our knowledge. To meet your needs, we strive to combine expertise in general health and wellness with lifestyle, diet, and exercise, in addition to the exciting fields of Functional Medicine, Functional Neurology, Nutrigenomics, and more. It is our goal to serve you, the individual, as well as our wider community in Sacramento and beyond. Together we can build a bridge towards health, wellness, and healing.

Functional Medicine

Functional Neurology

Neuroendocrine Immunology




What Our Clients Say About Us

 I am very happy with my ongoing improvements and improved Fibromyalgia symptoms. I’ve also lost twenty-one pounds since joining the program!

Julie J.

Dr. Rosario was able to look at my bloodwork, genetics, and symptoms to ultimately diagnose and heal me without the use of drugs. I am a completely new person today, and my family is so happy to have their mom, wife,  and daughter back. I cannot recommend Dr. Rosario highly enough!

Debbie W.

It didn’t take long before I felt better. My memory was better and my overall health was better. I appreciate what Dr. Rosario and her staff have done to help me be healthier and to help heal my wife, Debbie. I highly recommend Dr. Rosario and the Functional Longevity Institute team!

Andy W.



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Meet the Clinicians

Dr. Andrea Rosario, DC, DACNB

Founder and lead clinician


Dr. Lisa Medel, DC

Clinician for distance clients

Christine Marie Jones

Wellness Coach & Client Support Advocate