Kayvan distinguishes what is technically essential for survival from what is useful in practice. He says active people may need carbohydrates for performance and wellbeing, while rapid scale loss after eliminating them can reflect water and muscle rather than improved health.

The body can produce glucose through gluconeogenesis
Athletic performance may suffer without adequate carbohydrates
Rapid early weight loss can be water rather than fat
Removing a whole food group can create misleading feedback

“if you're an athlete and you're working out you also need it for performance your performance is going to suffer tremendously”
Liron Kayvan · 06:00

“especially with carbs because you lose water weight they'll lose 10 pounds in a week and they're like oh I'm a winner yeah but you…”
Liron Kayvan · 06:30

#carbohydrates#performance#water weight#fat loss

Myth Buster19:00

Why Eating Less at Breakfast Can Lead to More Eating Later

Cohen challenges the assumption that the smallest meal always produces the best weight-loss result. A one-egg breakfast may leave someone vulnerable to later eating, while a more complete meal can reduce reliance on snacks.

Aggressive restriction can shift eating later in the day
A complete meal may outperform a token low-calorie meal
More protein and actual food can reduce snack pressure

“people sometimes think in order to lose weight they have to eat less”
Jennifer Cohen · 19:00

“actually sometimes eating more is more yeah especially with regards to like protein I think people need to eat more actual food to avoid snacks”
Liron Kayvan · 20:00

#under-eating#breakfast#snacking#restriction

Hot Take· 2

Hot Take27:00

Take Ownership of Food Choices—Then Raise the Legal Floor

Kayvan argues that restaurants and food companies are structured to make profit, not optimise customer health, so consumers must take responsibility for what they buy. At the same time, he supports stronger rules preventing products from being described as olive oil when they are largely another oil and directs criticism toward regulators rather than individual businesses operating legally.

Commercial incentives do not automatically align with health
Consumers should not outsource responsibility to packaging or branding
Ingredient descriptions should meet clearer legal standards
Regulation can raise the minimum standard across companies

“their job the restaurant's job food company's job is not to make you healthy know their job is to make them profit”
Liron Kayvan · 27:00

“if you say it's olive oil has to be 100% pure olive oil”
Liron Kayvan · 32:30

#personal responsibility#food labels#regulation#restaurants

Hot Take28:30

Kayvan's Strong Case Against Seed Oils

Kayvan calls seed oil the most harmful ingredient in the Western food supply and claims its omega-6 fatty-acid profile promotes inflammation and affects cells throughout the body. These are the guest's strongly stated views in the episode, not a balanced review of the scientific evidence.

Kayvan claims seed oils trigger inflammatory processes linked to fat storage
He focuses on their high omega-6 content
He argues that fatty-acid composition can affect processes throughout the body
The episode does not present counterevidence or scientific sourcing

“seed oil is the number one poison in the western food supply”
Liron Kayvan · 28:30

“Seed oils are super high in Omega 6es um which is a fatty acid that gets basically represented in every single cell in your body”
Liron Kayvan · 35:30

#seed oils#omega-6#inflammation#nutrition claims

Explainer· 2

Explainer03:30

Why Protein Can Change Hunger and Meal Satisfaction

The pair describe protein as a major lever for satiety, with Kayvan linking the effect to the body's response to amino acids and umami flavour. Cohen adds her experience of feeling steadier after eating animal protein.

Protein intake may make meals more satiating
Kayvan describes the gut as responsive to amino-acid signals
Cohen reports feeling better after eating chicken when hungry

“people are not consuming enough protein”
Jennifer Cohen · 03:30

“our guts are like protein seeking machines you know and so when they register the amino acids like that Umami flavor of protein it's just…”
Liron Kayvan · 04:00

#protein#satiety#amino acids

Explainer14:00

Calories In, Calories Out Is Real—but Hard to Predict Precisely

Kayvan defends energy balance as a physical constraint while rejecting simplistic long-term prediction. He notes that absorption and many forms of energy expenditure—from digestion to immune and reproductive function—make both sides of the equation more complex than food logs and step counts imply.

Energy balance still governs whether weight is stored
Calories entering the mouth are not necessarily fully absorbed
Energy expenditure includes far more than deliberate exercise
The principle is valid even when precise prediction is difficult

“if your calories in more than your calories out you will store weight whether that's muscle or fat is is potentially negotiable depending on what…”
Liron Kayvan · 14:00

“it's so insanely complex that thing that to try to reduce it to a mathematical formula that we can predict is on the the flip…”
Liron Kayvan · 16:00

#calories#energy balance#metabolism

Story· 1

Story24:30

The Healthy Chicken Kebab With a Hidden Colouring Ingredient

Cohen recounts repeatedly ordering a chicken kebab because she believed it was a clean restaurant option. Only after asking several employees did she learn that colouring was added to make the marinade resemble saffron, illustrating how a healthy appearance can conceal unexpected ingredients.

A dish's visual appearance can create a false health signal
Initial ingredient answers may be incomplete
Restaurant positioning does not guarantee ingredient transparency
Direct questions may be needed to uncover preparation details

“it took me four people to get me to the actual answer the first three people just said oh it's olive oil and lemon juice”
Jennifer Cohen · 26:30

“he brought out the food coloring that they add to the recipe to make it look yellow to make it look like they're using saffron”
Jennifer Cohen · 26:00

#restaurants#food coloring#ingredients#transparency

Q&A· 1

Q&A08:00

Where Protein Shakes Fit—and Where They Do Not

Kayvan and Cohen treat protein shakes as a convenience tool for training, travel, or increasing protein intake. They do not recommend relying on shakes as the exclusive protein source, and Cohen says whole animal protein leaves her more satiated.

Shakes can help while someone increases protein intake
They are useful around workouts or while travelling
They should complement rather than replace normal food
Satiety can differ between liquid and whole-food protein

“you can't just exclusively get your protein from a protein shake I wouldn't advise it”
Jennifer Cohen · 08:30

“protein shakes have their place and I will have them from time to time and I will tell clients to have them”
Liron Kayvan · 08:30

#protein shakes#convenience#satiety

Takeaway· 2

Takeaway02:30

Why Eyeballing Portions Can Derail an Otherwise Healthy Diet

Cohen argues that people routinely underestimate portions even when the underlying food is healthy. The size of the serving, not only the identity of the food, can materially change total calorie intake.

Visual portion estimates are often inaccurate
Healthy foods can still be overeaten
Serving size can determine whether calorie intake matches the goal

“if you actually look at what an actual portion is to what we're actually eating very very different”
Jennifer Cohen · 02:30

“you can overeat good food and you can also overeat bad food”
Liron Kayvan · 13:30

#portions#calories#weight management

Takeaway16:00

Fiber Is the Overlooked Counterpart to the Protein Conversation

Cohen says the focus on protein often eclipses fiber, despite its role in fullness, digestion, and gut function. The discussion suggests fruits and vegetables first, with a supplement considered when a person cannot meet the need through food.

Fiber can support fullness and digestion
Certain gut microbes use fiber as an energy source
Fruit and vegetables are practical fiber sources
A supplement can target a genuine intake gap

“we talk so much about protein and we are seem to be remiss about fiber”
Jennifer Cohen · 16:00

“your gut even eats certain types of fiber it literally like pulls energy from the fiber itself”
Jennifer Cohen · 17:00

#fiber#digestion#gut health#satiety

Frameworks in this episode

Nature-Binding Nutrition

The Pleasure Point Principle

Insights & moments

⚡Myth Buster· 2

The Fast Weight-Loss Trap Behind Eliminating Carbohydrates