Bioidentical Hormones for Men: What Conditions Can Be Addressed?

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Dr. James D. Fontaine

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1/19/2026

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Are you experiencing loss of mental clarity, decreased energy, weight gain, loss of muscle mass, or reduced sexual function? These could be signs of a hormonal imbalance, specifically low testosterone symptoms. Bioidentical hormones can help restore balance and address conditions affecting men's health and quality of life. 

At Fontaine MD Aesthetics and Anti-Aging Medicine in San Diego, CA, Dr. James D. Fontaine offers top treatments, including bioidentical hormone replacement therapy (BHRT). If you're wondering how to naturally boost testosterone or want to know how to get started, call now to schedule a consultation. 

Conditions bioidentical hormones can address 

Bioidentical hormones can be used to treat a wide range of conditions related to low testosterone symptoms, including:  

  • Loss of mental clarity: Hormonal imbalance can cause brain fog, trouble concentrating, and memory issues. Many men notice that restoring testosterone levels improves focus and cognitive function. 
  • Decreased energy and stamina: If you feel constantly tired despite getting enough sleep, low testosterone may be to blame. Restoring balance can help you regain natural energy and improve physical performance. 
  • Weight gain and metabolic changes: Low testosterone is linked to increased abdominal fat and a slower metabolism. Balancing hormone levels can support weight management and improve body composition. 
  • Loss of muscle mass and bone density: Testosterone plays a key role in maintaining muscle and bone strength. Declining levels can lead to weakness, reduced endurance, and increased risk of osteoporosis. 
  • Reduced sexual function: Low libido and erectile dysfunction are common concerns for men with low testosterone. Hormone therapy can help restore sexual health and confidence. 

At Fontaine MD Aesthetics and Anti-Aging Medicine in San Diego, CA, Dr. Fontaine can provide a testosterone test to determine if hormone therapy is appropriate for your situation. 

What are bioidentical hormones, and how do they work? 

Bioidentical hormones are chemically identical to the hormones your body produces. Unlike synthetic hormones, bioidentical hormones match your body chemistry, which can lead to better tolerance and natural results. 

BHRT begins with a comprehensive evaluation, including a testosterone test and a review of your symptoms and medical history. Once your baseline is established, we can administer the hormones in the form that works for you. Injections and pellets are popular options because they provide steady, consistent hormone levels over time. 

Throughout treatment, Dr. Fontaine monitors your progress through follow-up appointments and lab work. Dosages can be adjusted as needed to ensure optimal results and minimize side effects. 

What results can you expect with BHRT? 

Many men notice improvement in energy, mood, and mental clarity within a few weeks of starting treatment. Other benefits may take a few months to fully develop as hormone levels stabilize. Results vary based on your individual hormone levels and how your body responds to treatment. Consistent therapy is key to maintaining balance and achieving long-term benefits. 

Learn how to naturally boost testosterone  

If you're experiencing low testosterone symptoms, Fontaine MD Aesthetics and Anti-Aging Medicine in San Diego, CA, is here to help. Dr. James D. Fontaine specializes in bioidentical hormones for men and uses a testosterone test to create personalized treatment plans. 

Whether you're curious about how to naturally boost testosterone or ready to explore hormone therapy, call today. Take the first step toward renewed energy and health.

When I came to Dr. Fontaine several years ago, I was going into early menopause and experiencing so many symptoms. Hot flashes, fatigue, pain, brain fog, and depression that were being dismissed by my regular doctors. Dr. Fontaine was truly a godsend. He listened, took my concerns seriously, and helped me create a plan that worked for my body. Over time, we adjusted my medication, and I now feel 100% better. I’m so grateful for his care and support!

A.H. Google

Louise initially treated me with Botox at an MD clinic I had been using for years. I was so pleased with my results, when she moved to Fontaine MD I followed her even though it was much farther away. Recently, I decided to also get fillers and expressed to her my desire for a very natural and youthful look, and she nailed it! She is a licensed RN with an Art degree therefore she really understands the anatomy and symmetry of the face. She is welcoming, professional, never rushes and very skilled at injecting both Botox and fillers, I highly recommend Louise!I also highly recommend Fontaine MD, great Doctor, and staff in a lovely, serene setting. They were instrumental in aiding me in a 20+ lb weight loss (so easy) and I could not be more grateful. I feel and look so much better and have maintained my new weight. That is not easy for many 60-year-old females.

L.L. Google

Louise is absolutely wonderful to work with! I have seen her for both an IPL facial and Botox (my very first time!). She took the time to answer my questions, address my concerns, and put my mind at ease. I could sense that I was in the hands of someone who was going to take care of me. Louise cares about her clients and their desired outcomes. I have done IPL facials in the past with other providers and the procedures felt very harsh on my skin. With Louise, my skin was not red, bumpy, or painful after and my sunspots were treated effectively! I also trusted Louise with my first Botox experience. Louise made me feel both comfortable and excited about the natural but effective results I was hoping to have! I am thankful I found Louise and will be a returning client!

N.B. Yelp

Louise listened to my skin concerns, made recommendations and completed Botox and filler procedures that that made an amazing difference!

C.T. Google

Before seeing Dr. Fontaine, I had no idea I could feel better. I just assumed that as I got older, low energy, hormonal struggles, and general decline were just part of life—something I had to accept. Looking back, I realize how much I had normalized feeling exhausted, unmotivated, and off-balance. My energy had dipped, my sleep was inconsistent, and no matter what I did, things like weight gain and mood swings seemed unavoidable. I wasn’t in crisis—I just wasn’t thriving. Dr. Fontaine completely changed that. From the first appointment, he took the time to listen, evaluate my symptoms, and explain what was really happening in my body. Seeing my lab results was an eye-opener—I finally had real data that explained why I felt the way I did. Within a couple of months of starting treatment, I started feeling like myself again. My energy improved, my focus sharpened, and I finally started sleeping through the night. Over time, the changes were undeniable—I was stronger, my mood was steady, and I didn’t feel like I was constantly fighting against my own body. Dr. Fontaine has been with me every step of the way, adjusting my treatment as needed and making sure I feel my best. He’s thorough, knowledgeable, and truly invested in his patients' well-being. I never feel rushed in my appointments, and he always takes the time to answer my questions. I didn’t realize how much I was missing out on until I started feeling this good again. Now, I feel like I’ve regained the energy, confidence, and vitality I thought were long gone. I’m beyond grateful to Dr. Fontaine for helping me.

C.M. Google

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