Functional Longevity Institute - Nancy DeJesus, MD


Dr. Nancy DeJesus has over three decades of experience in her field. 

Patients who entrust their care to Dr. DeJesus do so with confidence.  Dr. DeJesus  is recognized as a renowned physician in her field. Her background and knowledge allows her to transition effortlessly between the science and practice of medicine, and she has earned her reputation as the first female physician in Florida who possesses this level of specialized knowledge.  She focuses in optimizing your body and brain and shares insights from Functional, Energy, Cellular and Regenerative Medicine that will genuinely change the way you age.

Dr. DeJesus has extensive knowledge in Human Performance Optimization -  Metabolic, Functional, Cellular and Regenerative Medicine.  Exosomes are her passion. She is a pioneer in the clinical applications of advanced Exosomal therapies.  Exosomes are  small membrane-bound vesicles vital for cellular communication and healing in Regenerative Medicine.  

Her Precision Medicine programs include:  advanced Peptide Therapies, Bio-Identical Hormone optimization programs, Energy Medicine (including Pulsed Electromagnetic Therapy),  treatment of Autoimmune Diseases ie. Hashimoto's Thyroiditis, compounded Low Dose Naltrexone, Weight Optimization (GLP-1 and GIP agonists), Epigenetic and Genetic testing,  Liquid Cancer Biopsy (to detect ctDNA -  DNA fragments from a tumor cell circulation in your blood),  advanced Exosomal protocols  and much more…

As the founder of the Functional Longevity Institute, Dr. Nancy DeJesus is passionate about helping her patients expand their education and understanding of how to age well. When not helping patients at the Functional Longevity Institute, Dr. DeJesus spends her free time traveling, lecturing and providing care to medically under-served communities.  A lover of LIFE and all it has to offer, she thrives when presented the opportunity to help others harness the joy of simply being alive, healthy and well.

Functional Longevity Institute / Nancy DeJesus, MD

Benefits of once a week GLP-1 / GIP agonists:               

Beyond Weight Loss.  These Peptides lower the risk of Cardiovascular disease, Diabetes, certain types of Cancers; they help decrease Anxiety  and Depression, improve cognitive function in some patients ...


On March 18, Oprah Winfrey talked about how using  one of these weight-loss drugs changed her life and opened her eyes to the reality that obesity, in many cases, is a disease rather than a choice.   "After taking medication, however, she realized that she thought about food differently than people who had no trouble keeping weight off. Her brain was working against her. "You weren't thinking about the food! You weren't obsessing about it!" she said. ‚ÄúThat is the big thing I learned."

GLP-1 drugs were linked to reduced Depression and Anxiety in people with diabetes, compared with people who were not taking this Peptide.

People with diabetes who were taking Semaglutide were 45% less likely to be diagnosed with depression, and 44% less likely to have anxiety.

This group of medications is based on related compounds, all of which are glucagon-like peptide-1 (GLP-1) receptor agonists that mimic the natural GLP-1 intestinal hormone.  In doing so, they produce insulin after eating, helping to reduce blood sugar. They also slow the emptying of the stomach and promote a sensation of being full, leading to a reduction in appetite.

The most well-known GLP-1 drugs, Wegovy and Ozempic, are based on Semaglutide.  Other GLP-1 agonist compounds tested in the study like tirzepatide that mimics a second intestinal hormone, gastric inhibitory polypeptide, or GIP, in addition to GLP-1.

For people who do not have diabetes, only Semaglutide was associated with a reduction in depression and anxiety, compared to people who were not on GLP-1 medications.

The study analyzed patient records for 3,081,254 people with diabetes and 929,174 without diabetes, who were taking the drugs for weight loss.

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Our Location

900 E. Atlantic Ave Suite #9 Delray Beach, FL 33483

Office Hours




9:00 AM-11:00 AM

12:00 PM-3:00 PM


9:00 AM-11:00 AM

12:00 PM-3:00 PM


9:00 AM-11:00 AM

12:00 PM-3:00 PM