Weight Loss And ...

Think you know what it takes to keep weight off? Most people can tell you how to lose weight, but ask them what actually predicts keeping it off, and the answers get shaky fast. That’s a problem, because losing weight and maintaining weight loss are two completely different biological and behavioral games, and confusing the two is one of the biggest reasons people yo-yo.
In this episode, Holly and Jim put their listeners to the test literally. They’ve built a 20-question pop quiz covering everything from the hidden biology of metabolic adaptation to the real findings from the National Weight Control Registry, the groundbreaking study Jim co-founded three decades ago. And because so much has changed recently, they’re also tackling the question everyone’s asking: does any of this still apply in the age of GLP-1 medications?
Grab a pen (or play along in your head) and see how many you get right. Some answers might surprise you, and a few might change how you think about your own weight loss journey for good.
Discussed on the episode:
Why the biology of losing weight and the biology of keeping it off are two entirely different processes, and why not knowing this is setting you up to regain
What really happens to your metabolism after weight loss, and whether “metabolic adaptation” is something you should actually be worried about
The hunger hormone changes that don’t go away and what that means for your day-to-day life
The real math behind the “energy gap,” a concept Jim and Holly coined themselves
What the National Weight Control Registry’s 30,000+ members actually do differently, including the surprisingly unglamorous form of exercise most of them rely on
Whether successful maintainers take weekends and holidays “off” from their habits
The truth behind the infamous “95% of diets fail” statistic.
Whether losing weight slowly really does make you more likely to keep it off.
Why willpower isn’t the key predictor of long-term success and what is
What happens to the body when someone stops taking a GLP-1 medication, and whether that counts as the medication “failing”
The most vulnerable window for regain during medication-assisted weight loss and why most people prepare for the wrong phase
A rapid-fire round covering daily weighing, running vs. walking, and the most overrated maintenance strategy out there

What did humans actually evolve to eat? With paleo, keto, vegan, Mediterranean, and a thousand other diets all claiming to be "the one," it's no wonder people feel whiplashed every time they walk into a grocery store. But what if the answer isn't found in the latest diet book, but in millions of years of human evolution?
Join Holly and Jim as they welcome back Harvard evolutionary biologist Dan Lieberman for a second appearance on the show. This time, Dan isn't talking exercise. He's talking food. Drawing on his new book, "Fed Up: What Evolution Reveals About Food, Diet, Health, and Eating Well," Dan explains why there's no single "evolutionary diet," why our supermarkets are a completely unprecedented environment for the human brain, and why willpower alone was never going to be enough. And because Dan doesn't just study diets, he lives them. He shares the surprisingly rough personal experiments he and his wife put themselves through in the name of research.
By the end of this episode, you'll understand exactly why eating well feels so hard in the modern world, and why that struggle has nothing to do with a lack of discipline.
Discussed on the episode:
Why an evolutionary biologist says there's no such thing as "the" diet humans evolved to eat
The "naturalistic fallacy" and why what our ancestors did isn't automatically what we should do
What happened when Dan and his wife tried a raw food diet for several days (and why it ended with a bagel)
The one natural food that's high in both sugar and fat, and what it reveals about why we crave certain foods
How food processing quietly changed what's actually in your food, long before you ever open the package
Why Dan calls modern ultra-processed foods "hyper-matched" to our brains
The real reason low-carb and low-fat diets can both work, and why neither is right for everyone
What Dan learned trying the Atkins diet as a self-described "carboholic"
Why the Mediterranean diet keeps coming out on top, and whether that's fair to other traditional diets around the world
His take on the vegan vs. carnivore debate, and why he wouldn't attempt one of them
A listener's question about why the same diet can work great for one person and fail for their sibling
Practical advice for eating well on a tight grocery budget
The one thing Dan wants every listener to remember about their own struggles with food.
Resources mentioned:
Dan Lieberman's book: "Fed Up: What Evolution Reveals About Food, Diet, Health, and Eating Well"

Most people trying to lose weight obsess over the what: what diet, what medication, what workout plan. But according to Holly and Jim, the real key to long-term success isn't found in any of those choices. It's found in a set of decisions most people never even realize they're making.
In this episode, Holly and Jim count down the 10 decisions that determine whether a weight loss journey actually sticks. Some are questions you'd expect. Others might catch you completely off guard, including the one they say most listeners will never predict is number one.
Whether you're just starting, deep into a GLP-1 medication, working to maintain weight you've already lost, or wondering if you're on the right plan at all, this countdown is built for you. So before you make your next move, find out if you've quietly been making these decisions by default or on purpose.
Discussed on the episode:
The very first decision Holly says most people skip entirely and why it might surprise you coming from two people who host a weight loss podcast.
Why a number on the scale might not mean what you think it means, and what "success" should really be measured by
A newer, often-overlooked decision that's only become critical in the age of powerful weight loss medications
The mindset shift that separates people who keep weight off from those who regain it
Why hitting a plateau might actually be a sign you're succeeding, not failing.
The surprising, deeply personal decision Holly and Jim rank as number one one they say most listeners will guess wrong

For years, the ceiling on medical weight loss was 15%, maybe 20% if you were lucky. Now a new triple-target medication is posting average results that flirt with 30% body weight loss in clinical trials, numbers once reserved for the operating room. Holly and Jim sat down to unpack what's driving these results, and found themselves asking a question neither expected to ask in their careers: how much weight loss is actually too much?
Retatrutide, the drug at the center of this episode, adds a third receptor target to the GLP-1 and GIP combination already familiar to listeners. Holly and Jim break down what this third piece brings to the table, walk through the newest published and presented trial data, and get refreshingly honest about the parts of this "medical miracle" that keep them up at night.
More weight loss isn't automatically better weight loss. As these medications get more powerful, Holly and Jim argue the field needs to catch up fast on nutrition, dosing, and what "success" even means going forward. If you've been following the GLP-1 story, this episode is the plot twist you didn't see coming.
Discussed on the episode:
What makes this new medication a "triple agonist," and why adding a hormone best known for raising blood sugar might actually help with weight loss.
The eye-opening trial results that have researchers using words like "mind-blowing" and why the number didn't plateau the way older treatments do
A surprising new clinical worry that Holly never thought she'd hear herself say out loud
Why "maximum dose" might not be the right goal for most people, even though it produces the biggest numbers
The uncomfortable side effect that showed up more with this medication than with anything else on the market
Whether switching medications is a good idea if what you're currently using is already working.
The philosophical question Holly and Jim now find themselves asking about appetite itself and why silencing it completely might not be a win.
A hint at what's coming next in obesity treatment, involving a hormone that hasn't entered the conversation yet

Can simply paying attention to your first bite of food change how much you eat? It sounds too simple to matter, but Holly and Jim are digging into a topic that might seem completely outside their lane: mindfulness and meditation.
For years, mindfulness has been filed under "stress management," not "weight management." But a growing body of research is asking a bigger question: can training the mind actually change the way we eat, not by altering our biology, but by changing how we respond to it? Holly and Jim break down a recent meta-analysis of dozens of studies to find out what's real, what's hype, and where this surprisingly powerful tool might fit into your own weight loss journey, especially the part everyone struggles with most: keeping the weight off.
Tune in as Holly and Jim separate the science from the sales pitch, tackle listener questions, and even reveal a personal update that might surprise you.
Discussed on the episode
Why "eating on autopilot" happens to all of us and the moment Holly realized she was already halfway through a road trip sandwich she didn't remember eating
The surprising reason automatic eating exists in the first place (hint: it's not laziness)
What a 46-study meta-analysis reveals about mindfulness and eating behavior and why the effect is small but might matter more than you'd think
Why this tool may matter far more for keeping weight off than for losing it in the first place
The key difference between mindfulness and meditation (and why they get confused)
A concept called "decentering" that could change the way you handle cravings
Whether mindful eating is secretly just another diet in disguise
One simple, five-minute-a-day habit almost anyone can start today.
A rapid-fire round covering hunger vs. habit, biology vs. behavior, and myths about needing to "sit quietly with your eyes closed"
A personal confession from Jim about a new daily practice he's been keeping quiet about