Bioidentical Hormone Therapy Specialist

Jonathan W. Singer, DO -  - Functional & Alternative Medicine

Health First

Jonathan W. Singer, DO

Functional & Alternative Medicine located in Greenwood Village, CO & Cheyenne, WY

Many women and men think hormonal imbalances are just a natural part of aging, and they must put up with the symptoms. But ongoing hormone deficiencies take a toll on your body and lead to serious health problems. Jonathan W. Singer, DO, and the team at HealthFirst have provided safe, high-quality bioidentical hormone therapy for more than 20 years, helping thousands of patients feel better as their hormone levels were restored. To learn if you might benefit from bioidentical hormone therapy, call one of the offices in Greenwood Village, Colorado, and Cheyenne, Wyoming, or schedule an appointment online.

Bioidentical Hormone Therapy Q & A

What is bioidentical hormone therapy?

Hormone deficiencies are at the heart of many health issues, especially as you get older and hormone levels start to decline. 

When hormone levels are below normal, bioidentical hormone therapy restores your hormones back to normal and brings your body back into balance.

Bioidentical hormones have the same molecular structure as the hormones produced by your body. 

As a result, your body responds to bioidentical hormones just like they’re your natural hormones, reducing the risk of side effects. Bioidentical hormones are also produced from plant sources instead of synthetic chemicals.

When might I need bioidentical hormone therapy?

Many hormones naturally decline in men and women as they get older. Additionally, lifestyle factors like stress and nutritional deficiencies contribute to hormonal imbalances.

These are a few examples of the hormones you may need to replace with bioidentical hormone therapy:


Estrogen is responsible for women’s reproductive health, but it also regulates many other areas of your body, such as bone metabolism and collagen production in your skin. 

Low estrogen levels before and after menopause lead to health concerns such as osteoporosis, aging skin, vaginal atrophy, urinary incontinence, and weight gain. 

Estrogen also influences levels of neurotransmitters, which is why menopause causes anxiety, mood changes, and memory loss.


Starting around the age of 30, testosterone levels in men drop by as much as 2% every year. Testosterone also has a body-wide impact, so a deficiency leads to:

  • Weight gain
  • Erectile dysfunction
  • Osteoporosis
  • Decline in muscle mass
  • Loss of muscle strength
  • Thinning beard and body hair

Other vital hormones

These hormones also naturally decline as you get older:

  • Growth hormone
  • Insulin
  • Thyroid hormones
  • Cortisol
  • Epinephrine
  • Aldosterone
  • Calcitonin
  • Renin

A deficiency in just one of these hormones can have health consequences ranging from fatigue and sleep disorders to cardiovascular disease.

How do I know if I need bioidentical hormone therapy?

Dr. Singer begins by reviewing your medical history and symptoms and performing a physical examination. 

The next step is a comprehensive blood testing. He tests for over 30 hormones and metabolite markers, and then uses the results to develop a customized hormone formula that’s specific for each patient based on their hormone levels.

After starting bioidentical hormone therapy, you’ll continue to have occasional blood tests. The team at HealthFirst verifies that your blood levels stay within the normal range, and they make dose adjustments if needed.

If you have questions about the impact of hormone imbalances on your health, or you’d like to learn more about bioidentical hormone therapy, call HealthFirst or schedule an appointment online.