Kristen Mancinelli

Registered Dietitian Nutritionist

You're on a GLP-1

You're coming off a GLP-1

Make every
calorie count.

Protect your muscle mass and diet quality while the medication does its job.

Learn more →

Keep what you
worked for.

Build the nutritional habits that hold your results long-term.

Learn more →

Psst — want to do this without the meds? I can help with that too.

Kristen Mancinelli

Registered Dietitian Nutritionist

Make every
calorie count.

A GLP-1 shrinks your appetite — but not all calories do the same work. Protect your muscle mass and diet quality while the medication does its job.

Psst — want to do this without the meds? I can help with that too.

You're on a GLP-1

A GLP-1 makes it easier to eat less. It doesn't promise you'll feel good and like what you see as the weight comes off.

If you've spent years trying to lose weight without getting the results you wanted, a GLP-1 is a gift. No more deliberating about what or whether to eat and feeling bad about it anyway. The constant pull of food is gone. It's a freedom many didn't know was possible.

But it comes with a new challenge – preserving your muscle mass and getting the right balance of nutrients in fewer calories. Not so easy to do when food is unappealing.

Eating less than you need lowers your resting metabolic rate and drives the body to break down both fat and muscle for fuel. These aren't "side effects" of a medication — they're the body's normal response to lack of food. It's a challenge faced by every person who's successfully eaten less to lose weight, with or without a GLP-1. It can be managed. But it shouldn't be ignored. That risks undoing a lot of what you've worked for.

The truth is that eating well matters more on a GLP-1 than it ever did before. The quality of your diet, your protein intake, and how seriously you take resistance training are critical to your success. They are not additive. They're central.

What you do now determines whether your body looks toned as it shrinks, whether your face looks vibrant or gaunt, and whether you'll feel like a stronger version of yourself on the other side. That's exactly what we'll work on together.

Ready to build a plan?

Book a call

Prefer to text first?
That works too. →

You're coming off a GLP-1

You're coming off a GLP-1 after reaching a weight that once felt out of reach. Now your body will try to bring you back to where you were.

You've done something you may not have thought was possible. You're in a body you spent years trying to get to. A lot has changed for the better.

But we know what comes next.

The part of your brain that controls your metabolism has only one job now: return you to your old weight. Your resting metabolic rate is lower than when you started. Your appetite will return — often stronger than before. And without a plan in place, your body will find its way back.

The other part of your brain, the part I'm talking to now, can choose to take charge of this situation and change the trajectory. You are already living inside a lighter body. You are not reaching for the impossible — you're defending ground you've won.

Keeping the weight off requires the same things that would have been required to lose it without the medication: eating less than your appetite will push you toward, building muscle mass that raises your resting metabolic rate, and organizing your life around more movement than your brain will naturally want.

The medication made eating less feel effortless. Now you need a strategy to keep the weight from coming back. That's exactly what we'll work on together.

Ready to build a plan?

Book a call

Prefer to text first?
That works too. →

Background

Kristen Mancinelli is a registered dietitian nutritionist working with clients on GLP-1 medications and those coming off them. She helps clients lose weight in a way that preserves muscle and energy expenditure, so their health remains vibrant and results are easier to maintain.

She holds a BS in Chemistry from NYU and an MS in Nutrition and Public Health from Columbia University. Her career spans NIH-funded research, clinician education, patient advocacy, health communications, and food and nutrition policy — giving her a native understanding of the many influences on a client's health: from the physiology underlying their health status, the beliefs and environment driving their behaviors, to the healthcare systems they're navigating to get the care they need.

She is the author of two books — on the ketogenic diet and intermittent fasting — that translate the science of hunger and satiety into practical strategies for day-to-day eating. Her counseling work helps people develop real agency over their weight and metabolic health, so they can maintain results independently over the long-term.

Years in science
& healthcare

Chemistry

Nutrition &
Public Health

Registered Dietitian

Books

Ulysses Press, 2015

The ketogenic diet works by restricting carbohydrates to the point where insulin stays low and the body shifts from using glucose to burning fat instead. Appetite drops and food noise quiets. Half the time you just don't feel like eating. Keto isn't for everyone. But for my clients who had spent a lifetime preoccupied with food, it gave them a freedom they hadn't thought was possible before GLP1s.

Ulysses Press, 2018

Most people curious about fasting would show up at my door convinced they couldn't go half a day without eating. Two weeks later they were amazed by what their body was capable of. It was a profound lesson - how easily we can mistake a choice for a constraint. They also learned something practical: when you're eating less overall, what you eat in those moments matters more than it ever did before.

Testimonials

Kristen helped me eat better, and ultimately feel better, when I didn’t have much interest in eating and had pain when I did. She has consistently offered me simple and effective advice to support my daily routine, and she always has a solution when I feel like something is off balance. This has made all the difference.

Nancy G, 58

Kristen guided me through a year-long journey of creating habits to support my weight loss and lower my A1c. Her insights and guidance made the process both comfortable and challenging — and led me to not only achieve my health goals, but also to a lot of personal growth.

Keith M, 49

When I began seeing Kristen, my control of my diabetes was erratic and certainly uninformed. Kristen took the time to explain how my eating habits, my exercising and my hunger were all inter-related, and I have been very successful in keeping my glucose in check, as well as becoming stronger, and a better cook too!

Stephanie L, 61

Kristen Mancinelli

Let's talk about where you are.