Weight Challenge Diagnosis
Let’s work together to discover what causes your weight gain
Body Composition Analysis
Know your target areas based on your muscle mass, fat, water
Weight Gain Treatment
GLP-1s and supervised weight loss prescription medications
Weight gain treatment
Fight vitamin deficiencies that can affect your wellness
Weight Management Plan
Science-backed nutrition, exercise, and coaching
Emsculpt NEO Body Sculpting
Noninvasive body sculpting for targeting stubborn fat
ABOUT
Welcome to Btivity
I’m Marian, lead medical provider at Btivity, a Family Nurse Practitioner (FNP-C) with advanced education in Obesity Medicine, and a member of the Obesity Medicine Association.
But first, I’m just like you. I’m a patient with obesity. I know how discouraging it can feel to search for answers and not find the right support. The truth is, it wasn’t until I started treating obesity as a medical condition that everything changed.
That realization inspired me to create Btivity, a personalized medical weight-loss clinic and wellness center in Marietta, Georgia, serving the Atlanta metro area.
At Btivity, we support you with:
- Personalized coaching for lasting behavior change
- FDA-approved weight-loss medications, including GLP-1s and appetite suppressants, for qualifying patients
- Medically supervised weight gain diagnosis, weight management treatment plan, and health monitoring
At Btivity, we believe in holistic wellness, from the inside out, and we’re here to support your journey with care that feels personal, respectful, and grounded in your goals.
“I believe everyone can lose weight when empowered with the right tools and medical supervision.”
~ Marian Opoku-Agyeman MSN, FNP-C

Btivity GUARD Weight Management Method

Five phases. Sustainable Results.
Drawing on our years of weight management experience, we’ve designed our 5-phase weight management methodology (GUARD) to give you the best chance of achieving your weight-loss and maintenance goals.
For us, it’s not about just meeting a number on the scale. It’s about losing weight, feeling empowered, and maintaining a sustainable, healthy lifestyle.
SERVICES
100% evidence-based medical weight loss treatment
What’s your weight loss challenge?
Let’s face it! Losing and maintaining a healthy weight is not easy. There are endless fad diets and always a new tip to try.
You are not alone if you’ve reached a weight loss plateau. Most patients struggle with similar challenges in weight loss management.
No matter your weight-loss challenge, we have an evidence-based, medically supervised weight-loss program tailored to you.
I’m not losing weight but I exercise a lot
I would like lose fat not muscle, but how?
I can’t seem to lose weight by dieting
My weight is affecting my overall health
I eat uncontrollably some days
I would like to get rid of stubborn fat
I can’t stay motivated with my weight goals
I need personalized weight loss coaching
TESTIMONIALS
You can lose the weight too!
Here’s what our patients have to say about their weight loss journey
“stubborn weight, gone!”
I was struggling with my stubborn weight for some time. However, I got in contact with Btivity, and within six weeks, I got rid of the excess weight.
I recommend Btivity to anyone struggling with weight loss.
Goal weight: 165 lbs
Starting weight: 179.4 lbs
Final weight: 159 lbs
“health turnaround”
So far my results have brought nothing but joy, positive body image, and feeling of confidence.
I was diabetic when I registered at Btivity with an Alc result of 9.8 as of March 2023.
In June 2023 my Alc was 5.4 and I have lost 44lbs so far!!! Not only did I lose weight but my health status turned around for good
Weight lost: 44 lbs
Results: better health vitals
“more energy”
Marian has guided me to make better choices, therefore a healthy way to live. I have more energy, my numbers are great.
I’m especially grateful for the 12 Ibs that don’t live with me anymore. Thank you, Marian, you made it so easy!
Goal weight: 154 lbs
Starting weight: 164.2 lbs
Final weight: 151.8 lbs
Check out more 5-star reviews on Google ➜
medical weight loss pricing
We provide affordable weight loss options for any weight goal
First month with labs
$289
We provide labs
First month weight loss phase
- Lab testing (Btivity Wellness Center Custom Blood Work/Testing)
- 4 patient visits with a certified medical weight loss provider
- Body weight compositin assessment
- One free vitamin infusion
- Personalized weight
management plan based on the
Btivity GUARD Methodology - Personalized meal plan
- Custom exercise regime
- Weekly weight weigh-ins
- FDA-approved weight loss medication when needed*
First month without labs
$199
You provide your labs. Labs must be less than 6 months old.
First month weight loss phase
Lab testing (Btivity Wellness Center Custom Blood Work/Testing)- 4 patient visits with a certified medical weight loss provider
- Body weight compositin assessment
- One free vitamin infusion
- Personalized weight
management plan based on the
Btivity GUARD Methodology - Personalized meal plan
- Custom exercise regime
- Weekly weight weigh-ins
- FDA-approved weight loss medication when needed*
After the first month, monthly plans start at
$99
3-6 month long-term plans are available for even more savings!
Weight managment phase
- 3-month weight management plan with weekly or monthly management guiduance
- Weekly or monthly weight management plan review by a medical weight loss provider
- Weight loss medication supervision and monitoring to avoid any negative side effects
- Personalized weight
management plan based on the
Btivity GUARD Methodology - Personalized meal plan
- Custom exercise regime
- Weekly weight weigh-ins and body composition tracking
* Phentermine (Adipex-P, Lomaira) appetite suppressant included. All other weight medication is at an extra charge.
Frequently asked medical weight loss questions
You don’t have to go on your weight loss journey alone.
We’ve got you! Working with a licensed medical weight-loss professional gives you a better chance of meeting your weight-loss goals and staying healthy.


