Leah Crum

Overview

Leah Crum is the Stanford researcher introduced in the episode for studying how mindsets and informational framing can shape physiological and health-related outcomes.

Current Profile

The current source connects Crum to Mindset Effects on Physiology through two examples: differently labeled but nutritionally identical milkshakes associated with different ghrelin and satiety responses, and hotel workers whose health metrics changed after being told that their daily labor counted as exercise. Her role in the episode is to extend placebo discussion beyond inert treatment toward beliefs that organize the meaning of food, activity, and expected outcomes.

Key Characteristics

• Studies mindsets as structured beliefs linking expectation, prior knowledge, and context.
• Is associated with the “Mind Over Milkshakes” experiment on labeling, ghrelin, and satiety.
• Is associated with a hotel-worker intervention reframing ordinary work as health-relevant exercise.
• Grounds the claim that information can interact with behavior and physiology without making thought omnipotent.

Evidence

Food framing

• How Placebo Effects Work to Change Our Biology & Psychology reports that the same milkshake, described as indulgent or sensible, was associated with different ghrelin and satiety responses.

Exercise framing

• How Placebo Effects Work to Change Our Biology & Psychology reports changes in blood pressure, resting heart rate, and body weight after hotel workers were told their labor counted as exercise.

Qualifications

The episode note does not provide full methods, effect sizes, replications, behavioral mediators, or long-term outcomes. These studies do not show that labels replace nutrition, exercise programming, medication, or other evidence-based care.

What Changed

• Created a source-bounded profile connecting Crum’s mindset research to food and occupational-activity physiology.

Relationships

• Mindset Effects on Physiology - main framework supported by Crum’s studies in the source.
• Treatment Context and Dose Expectation - adjacent mechanism through which framing changes expected outcomes.
• Placebo, Nocebo, and Expectation Effects - broader family of expectation-dependent effects that the episode compares with mindset research.