Union · Mon
Old Bridge · Wed
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Integrative & Functional Medicine · Union & Old Bridge, NJ

Modern medicine, made personal.

Dr. Lydia Sun, MD looks past the symptoms to the biology underneath — advanced diagnostics and individualized, functional-medicine treatment plans that help you feel like yourself again.

The Functional Medicine Approach

Why treat the symptom when you can go to the source?

Dr. Sun provides comprehensive labs and diagnostics that pinpoint what's actually driving your symptoms and chronic conditions — then translates those findings into a treatment plan built for your metabolism, genetics, and body. If you've been told your labs are "normal" but you still don't feel right, functional medicine is built for exactly that gap.

  • Advanced Diagnostic Testing. A comprehensive panel of labs to assess your total health.
  • Gut Health. Rebalancing the microbiome to restore sustainable, whole-body health.
  • Functional Oncology. Supportive plans that work alongside conventional cancer care to improve quality of life.
  • Medication-Assisted Recovery. Evidence-based support for dependence, delivered with dignity.

Prevent disease — don't just manage it.

Our goal is a comprehensive, functional-medicine plan that optimizes your health while reducing or eliminating the symptoms holding you back. You're an active participant in your own care, with a plan you actually understand.

Start with a consultation
Sun Wellness gold sun mark Portrait — to be added
About

Dr. Lydia Sun, MD

Integrative Internal & Functional Medicine

Dr. Lydia Sun practices integrative internal medicine — pairing conventional training with functional-medicine tools to uncover the underlying causes of illness and return the body and mind to balance.

Her approach is root-cause and whole-person: advanced diagnostics to understand each patient's individual biology, then customized plans built around their metabolism, genetics, and goals. She believes lifestyle is medicine, and that patients do best as active participants in their own care — treated with compassion, patience, and a plan they understand.

Education, Training & Board Certifications

Details confirming with Dr. Sun.

Get Started

Request an Appointment

Request an appointment online, or send a question about a service — someone will get back to you within one business day.

Mondays · Union

Union Office

2333 Morris Ave, Ste B107
Union, NJ 07083
Wednesdays · Old Bridge

Old Bridge Office

200 Perrine Road, Ste 229
Old Bridge, NJ 08857

Both offices see patients by appointment — Union on Mondays, Old Bridge on Wednesdays.

(908) 372-5555

Email sunwellnessllc@gmail.com  ·  Fax 609-935-3791

We protect your privacy. We will never sell, share, rent, or market your personal information to any third party.