Physician-Led Pediatric Obesity and Metabolic Care for Families Throughout Greater Miami
Author: Dr. Natalie Hernandez, Pediatric Endocrinologist & Metabolic and Obesity Medicine Specialist
If You're Worried About Your Child's Weight, Start Here
You've done the things you're supposed to do. Home-cooked meals more nights than not. A sport or an activity that keeps your child moving. Limits on screen time you actually enforce.
And the growth chart still isn't going the direction you hoped.
Here's what we want Miami parents to hear clearly: this is not a reflection of what you're doing at home.
A child's weight is shaped by genetics, hormones, insulin resistance, puberty, sleep, and metabolism working together — forces no amount of good parenting can fully override on its own. Getting a straight answer starts with understanding which of those is actually driving things for your child, not another list of foods to cut.
Looking for the Top Pediatric Endocrinologist for Weight Loss in Miami?
Dr. Natalie Hernandez is a board-certified pediatrician and fellowship-trained pediatric endocrinologist specializing in pediatric obesity medicine, metabolism, diabetes, and hormone health. She leads metabolic and obesity medicine for LIFE Pediatric Endocrinology, a national concierge practice, and works with Miami-area families who want a physician's answer to why their child's weight isn't responding to the usual approach.
Why Miami Children Gain Weight
No two children arrive at the same weight for the same reason.
- Insulin resistance can drive hunger and fat storage even when meals are genuinely healthy.
- PMOS (formerly PCOS) makes weight management measurably harder for many teenage girls, and often goes unrecognized for years.
- Puberty reshapes appetite, body composition, and metabolic rate on its own.
- A smaller number of children have a specific genetic or hormonal driver that lifestyle changes alone were never going to fix.
Dr. Hernandez evaluates the full picture rather than treating the scale as the whole story, two children who look alike on a growth chart can need entirely different care.
A Comprehensive Medical Evaluation
Before recommending any treatment, Dr. Hernandez performs a thorough evaluation that may include:
- Growth chart and weight chart review
- Medical and family history
- Nutrition and sleep assessment
- Physical activity review
- Laboratory testing
- Screening for insulin resistance
- Evaluation for PMOS (formerly PCOS)
- Screening for prediabetes and other metabolic conditions
- When appropriate, genetic testing for early-onset or severe obesity
This is what lets us build a plan around your child's actual biology, not a generic template.
You Don't Have to Enroll in a Program to Get Answers
A lot of Miami families delay reaching out because they picture a long-term commitment before they've even had a conversation.
That's not how it has to start.
Some families join LIFE's Confident Body Program, physician-led medical care paired with ongoing coaching. Others come in for one specific thing: bloodwork, a PMOS (PCOS) workup, an insulin resistance screen, or genetic testing for a child whose weight gain doesn't follow a typical pattern, with no further commitment attached.
Dr. Hernandez will say plainly what she thinks is actually needed for your child, and it's frequently a smaller ask than families walk in expecting.
When Genetic Testing Makes Sense
For the large majority of children, weight gain comes from several ordinary factors layered together, not one identifiable cause. Genetic testing isn't part of that picture for most kids.
It's worth a conversation for a smaller group, specifically when a child has:
- Obesity that appeared very early, often before age 5
- Hunger that never seems to resolve, even shortly after a full meal (hyperphagia)
- Weight gain alongside developmental delay or other atypical features
- A strong family history of severe, early-onset obesity
- No meaningful change despite a genuinely well-followed lifestyle plan
A handful of single-gene causes, POMC, PCSK1, and LEPR deficiency, and Bardet-Biedl syndrome, were once dead ends clinically. That's no longer true: an FDA-approved, targeted medication now exists for children as young as 2 with these specific, confirmed diagnoses. Finding the actual cause can reshape the entire treatment approach.
GLP-1s and Other Medications: What Miami Parents Are Asking
This comes up in almost every consultation, so it's worth addressing head-on.
Two GLP-1 medications hold current FDA approval for adolescent obesity: semaglutide (Wegovy), for ages 12 and up, and liraglutide (Saxenda), for ages 12–17. Both were studied as an addition to lifestyle treatment, not a substitute for it, and neither is where care starts by default at LIFE.
The first step is always an evaluation, not a prescription. When labs and clinical history genuinely support it, GLP-1 therapy or metformin may be added to a broader plan — with monitoring, coaching, and a direct conversation with your family before anything is written. If your child doesn't need medication, that gets said plainly too. Learn more about how we approach GLP-1 medications for kids →
Could It Be PMOS (Formerly PCOS)?
For teenage girls, weight that won't respond to reasonable effort sometimes traces back to a condition families haven't heard named yet: PMOS, formerly known as PCOS.
Irregular cycles, acne, excess hair growth, and weight that resists diet and exercise can all point toward it — and it's routinely missed in adolescence because the symptoms read as ordinary teenage change.
Dr. Hernandez screens for PMOS as part of a full weight evaluation. Read more about recognizing PMOS symptoms in teens →
How Fast Should a Child Safely Lose Weight?
This question deserves a careful answer, not a number pulled off a website.
For a child who's still growing, rapid weight loss usually isn't the actual goal. More often, the target is slowing how quickly weight is being gained while height catches up, which improves the growth trajectory on its own. Teens closer to their adult height are sometimes appropriate candidates for a more direct, still-gradual weight-loss target.
The right pace depends on age, growth stage, overall health, and the underlying cause. That's a physician's judgment call, made with your child's actual numbers in front of them.
Why Miami Families Choose LIFE Pediatric Endocrinology
Families throughout Coconut Grove, Coral Gables, Pinecrest, Key Biscayne, Palmetto Bay, and the Weston corridor choose LIFE Pediatric Endocrinology because they want a physician's evaluation, not a generalized weight-loss program.
Our concierge model provides:
- Direct physician access and extended, unhurried appointments
- Personalized treatment plans built on real lab work, not assumptions
- Follow-up that's genuinely proactive, not a prescription and a goodbye
- A full look at metabolic and hormonal health, not just a weigh-in
- Evidence-based, physician-led pediatric endocrine care
By limiting patient volume, we're able to provide the continuity and attention that's difficult to find in traditional healthcare settings, no matter how good the neighborhood pediatrician is.
Frequently Asked Questions (FAQ)
Do you have an office in Miami? No standing office is needed, Dr. Hernandez and the LIFE team see Miami-area families both in person and by secure telehealth visit, whichever works better for your family.
Does my child need a referral? No. Families are welcome to schedule a consultation directly.
Do we have to enroll in the Confident Body Program? No, it's one option, not a prerequisite. Many families come in for a single evaluation, a PMOS screening, or genetic testing and never enroll in anything beyond that. Dr. Hernandez will tell you directly which path fits your child.
Will my child need a GLP-1 medication? Not automatically. Care starts with a full evaluation, not a prescription. When labs and history support it, an FDA-approved option like semaglutide (Wegovy) or liraglutide (Saxenda) may become part of the plan, always monitored, never as the first move.
Is genetic testing right for my child? Usually not. Most childhood weight gain has multiple ordinary causes rather than one identifiable one. It's worth discussing if weight gain started very early, is severe, or comes with hunger that never really lets up. Dr. Hernandez can help you sort out whether it applies to your child.
Could my daughter's weight be related to PMOS (PCOS)? It's worth considering. Irregular periods, acne, excess hair growth, and weight that resists normal effort can all be signs, and PMOS is commonly missed in the teen years. Screening for it is a standard part of a full evaluation.
How is LIFE different from other pediatric weight-loss options in Miami? LIFE is led by pediatric endocrinologists, not a generalized weight-loss clinic. Care is built around identifying the underlying medical and metabolic causes of weight gain, insulin resistance, PMOS, prediabetes, hormonal conditions, and occasionally single-gene causes, rather than starting and stopping with calorie counts.
Ready to Take the Next Step?
If your child is dealing with obesity, insulin resistance, PMOS, prediabetes, or weight gain that doesn't add up, an early evaluation can change the direction things are heading.
Dr. Natalie Hernandez brings physician-led metabolic and endocrine care to families across Florida, built on real nutrition guidance, coaching support, and medication only where the evidence actually calls for it.
Schedule a consultation to find out what your child actually needs, whether that's the full Confident Body Program or a single conversation to start.
Meet Your Physicians
Dr. Natalie Hernandez
Dr. Natalie Hernandez is a pediatric endocrinologist with advanced fellowship training in pediatric obesity medicine, metabolism, diabetes, and hormone health. As physician leader of LIFE's Confident Body Program, she specializes in childhood obesity, insulin resistance, PMOS (formerly PCOS), prediabetes, and other complex metabolic conditions — and is licensed to see patients throughout Florida.
Dr. Toni Kim
Dr. Toni Kim is the founder of LIFE Pediatric Endocrinology and a board-certified pediatric endocrinologist with more than two decades of experience caring for children with complex endocrine and metabolic disorders. She is nationally recognized for her expertise in growth disorders, puberty, and integrative hormone care, and sees Florida families both in person and by telehealth.
Dr. Kelli Davis
Dr. Kelli Davis is a board-certified pediatric endocrinologist trained at Vanderbilt's Program for Pediatric Metabolic Bone Disorders, with a focus on growth disorders, metabolic bone health, and puberty concerns. She supports families across the Southeast, including Florida, alongside Dr. Hernandez and Dr. Kim.
Getting Care in Miami
LIFE Pediatric Endocrinology provides physician-led pediatric weight loss and metabolic care to families throughout Coconut Grove, Coral Gables, Pinecrest, Key Biscayne, Palmetto Bay, South Miami, and the greater Miami and South Florida area, both in person and by secure telehealth visit. No standing office is required for LIFE to see your family in person; the team will coordinate what works best for you.