
Hormone Replacement Therapy in St. Louis
Bioidentical hormone pellet therapy for men and women, delivered in our Chesterfield clinic by Judy Smart, RN and her care team.
Welcome to Smart Age STL
Enjoying Good Health & Life at All Ages
Smart Age STL is a safe place to talk openly about how your body is changing. We work with women and men throughout St. Louis and West County who are dealing with hormone imbalance, looking at the whole picture — thyroid, vitamin levels, adrenal function, and sex hormones — rather than one symptom in isolation.
Hormones play a role in nearly everything: mood, stress response, energy, and sex drive. When they fall out of balance, it can be hard to pin down why you don’t feel like yourself.
Symptoms of hormone depletion vary from person to person. Below are some of the changes patients at our Chesterfield clinic most often describe.
Founded & Led by Judy Smart, RN, BSN5.0★ Google RatingPersonalized Care Plans
For Women
Hormone Imbalance Symptoms in Women

Not Feeling Like Yourself
Many women describe a slow drift from feeling like themselves — lower motivation, less enjoyment in everyday life, and a sense of being “off” that's hard to explain.
Mood Swings & Irritability
Shifting estrogen and progesterone can make emotions harder to regulate, with more frequent tearfulness, irritability, or feeling constantly on edge.
Brain Fog & Anxiety
Trouble concentrating, a persistent low mood, or losing interest in things you used to enjoy are common complaints during hormone changes.
Hot Flashes & Night Sweats
Sudden waves of heat, sweating through the night, or a dry mouth are some of the most recognizable signs of shifting hormone levels.
Low Sex Drive
A noticeable drop in libido is one of the most common symptoms women bring up, and one of the least talked about.
Insomnia
Falling asleep or staying asleep becomes harder when estrogen and progesterone shift.
Joint Aches & Acne
Stiff or achy joints and unexpected breakouts can also show up as hormone levels change.
For Men
Hormone Imbalance Symptoms in Men

Declining Testosterone
Testosterone naturally begins to decline for most men starting in their 40s, and the gradual changes are easy to miss at first.
Brain Fog & Low Mood
Trouble focusing, a flatter mood, and increased anxiety are common complaints once testosterone starts to drop.
Insomnia
Falling asleep or staying asleep can get harder as testosterone levels shift, even without any change in your routine.
Stubborn Weight & Short Temper
Extra weight around the midsection that won't budge with diet or exercise, along with a shorter fuse than usual, are frequently reported together.
Joint Aches
Stiff or achy joints, especially first thing in the morning, are another change patients often mention.
Low Sex Drive
A drop in overall sex drive, including fewer morning erections, is often one of the first signals men notice.
Changes in Sexual Function
Beyond sex drive, some men also notice changes in sexual performance and satisfaction.
The Process
How Pellet Therapy Works
Consultation & Labs
We start with a conversation about your symptoms and comprehensive lab work, so we're working from real numbers, not guesswork.
Custom Pellet Insertion
Your pellets are compounded to your individual lab results and placed during a brief in-office procedure at our Chesterfield clinic.
Feel the Difference
Many patients report noticeable changes over the following 3 to 6 months as hormone levels settle into their new baseline.
Compounded bioidentical hormone therapy is not FDA-approved. Results vary by individual.

Your Care Team
Meet Judy Smart
RN, BSN · Founder
Working in conjunction with Dr. Jennifer McDonald, DO.
Judy Smart, RN, BSN began her nursing career in Labor and Delivery before spending years in high-risk obstetrics and women’s healthcare across St. Louis, Iowa, and Nebraska. As her patients aged, she became an expert in hormone therapy and founded Smart Age to help women and men maintain their health throughout every stage of life.
Judy still works from the same philosophy that started it all: individualized care plans built around each patient’s specific needs.
Patient Stories
What Our Patients Say
“The Smart age has brought control of my body back to me! For years I felt like I was losing control of my body, no matter how hard I worked out, ate well, slept, supplemented, meditated, etc… positive results just weren’t there. Then along came Judy to my rescue. With close analysis of my system & how it was functioning or not, the recommendations I received literally changed my life within 2 months. My body works again like it should! When I work out, eat well & have life balance, I see results. Couldn’t be happier.”
“I started pellet therapy with Smart Age a little less than a year ago after experiencing all the unpleasant effects menopause for over a year. The morning following my first pellet therapy was the first time I woke up without a migraine in several months and my hot flashes were gone. Judy didn’t just hear my complaints, she listened and heard them. I am forever grateful to be given back my drive to be healthy again and I feel like myself again!! I look forward to working out and challenging myself to be better every day. I can’t tell enough people, men and women, about my great experience.”
“22 years ago is when I first met Judy and started HRT. It was easily one of the best decisions of my life! Judy closely monitors all my hormones - including my thyroid - which has also been a huge blessing. Prior to receiving the treatments, I wasn’t sleeping well, had brain fog and was just generally tired - ALL THE TIME - to name of few of my issues. The whole experience has changed my life in such a positive way - I now have the energy and stamina to experience what I want in life. I wholeheartedly recommend Judy and her team at Smart Age!!!”
“So I have known JUDY for almost 20 years and I am so thrilled for her business and how well she goes about it and how well her patients are treated. Getting an appointment is incredibly easy and the service provided by her office is excellent. I love her for what she’s doing and for how much she is helping the people she serves :-)”
“I have been doing Smart Age for 7 years now and it is amazing what it does for me! My only regret is I didn’t know about this sooner. Judy is very much there for you with answers to your questions and very concerned about my health and wellness.”
Individual results may vary.
Our Services
Hormone Therapy Services in Chesterfield
Ready to Find Out What's Going On?
Schedule a consultation with our Chesterfield team and get real answers about your hormone health.



