Low Testosterone Specialist

Terese S. Harris, MD

Bioidentical Hormone Specialist & Anti-Aging & Regenerative Medicine located in Newport Beach, CA

Testosterone is a critical hormone for men, and when levels decline, a wide range of symptoms arise. Testosterone replacement therapy is an excellent way to address low testosterone and is one of many services available from Terese Harris, MD, FACOG, in the Fashion Island community of Newport Beach, California. If you suspect your testosterone levels have dropped, or you’d simply like a comprehensive hormone evaluation, call the office in Orange County or use the online booking tool to set up a visit.

Low Testosterone Q & A

What is testosterone?

Testosterone is usually considered a “male” hormone, although women also produce small amounts of testosterone. The hormone plays an essential role in producing sperm, and also impacts sex drive, muscle mass, bone mass, and red blood cell production. 

Even the way a man stores fat is associated with his testosterone levels. Production ramps up during puberty and is at peak levels when a man is in his 20s and 30s. After that point, levels begin to naturally decline. 

While aging is the most common cause of low testosterone, cancer treatment and testicular injury can also cause hormone levels to decline. Kidney disease, alcoholism, and cirrhosis of the liver can also create hormonal imbalance. 

How do I know if I have low testosterone?

Low testosterone leads to distinct symptoms in men. Some indications that your testosterone levels have declined include:

  • Reduction in body hair
  • Insomnia
  • Mood swings
  • Decreased sex drive
  • Weight gain
  • Fatigue
  • Lack of energy
  • Thinning bones
  • Depression
  • Lack of self-esteem, motivation

If you notice these types of changes, it might be time to schedule a comprehensive hormone evaluation.

What can be done to treat low testosterone?

The first step is determining your current levels of testosterone and other hormones. The normal range of testosterone in men falls between 300 and 1,100 nanograms per deciliter. If Dr. Harris notes an imbalance, hormone replacement therapy might be a good option to consider. 

Hormone replacement therapy works by supplementing the natural testosterone your body produces with Bioidentical testosterone. Testosterone replacement is in the form of transdermal creams, injectables or hormone pellets. Dr. Harris works in partnership with a few outstanding compounding pharmacies in the area to create customized hormone replacement pellets. 

These pellets are implanted beneath your skin and release a steady stream of hormones over a period of several months. Dr. Harris uses bioidentical hormones that share the same chemical structure as your natural testosterone. 

You’ll be closely monitored during your testosterone replacement treatment, and Dr. Harris evaluates how well your body is adjusting to replacement. Adjustments can be made to refine your program and help you achieve the best possible results. 

If you’d like more information about testosterone testing or hormone replacement therapy, call the office to set up a consultation. Online scheduling is also available and allows you to book your visit any time of day or night.


Bioidentical Hormone
Pellet Therapy




Low Testosterone


Vaginal Dryness



Bio Medical Hormones


Sexual Health




Weight Management