Weight Science
Cravings
THE RESEARCH
Higher ghrelin (hunger hormone) predicts increased cravings and future weight gain. Elevated cortisol (stress hormone) is linked to both cravings and weight gain.
INTERPRETATION
Cravings are biological signals, not behavioral failures. If ghrelin and cortisol are dysregulated → cravings increase automatically.
Energy
THE RESEARCH
Low energy states reduce daily movement (NEAT), impacting fat loss indirectly. Hormonal imbalances (like insulin resistance) reduce metabolic efficiency.
INTERPRETATION
When energy systems are inefficient:
You move less,
You burn less,
Fat loss slows down.
Energy is the engine, not just the output.
Digestion
THE RESEARCH
Gut-related hormones directly regulate appetite and metabolism. Dietary composition alters insulin, ghrelin, and leptin responses.
INTERPRETATION
Poor digestion leads to:
Poor nutrient signaling,
Increased cravings,
Slower metabolism.
You are not what you eat. You are what your body processes and signals.
Sleep / Stress
THE RESEARCH
Sleep restriction increases ghrelin → higher calorie intake. Poor sleep alters appetite regulation and promotes weight gain.
INTERPRETATION
When sleep is poor:
Hunger increases,
Cravings increase,
Fat loss resistance increases.
Stress + sleep = metabolic switch.
Satiety
THE RESEARCH
High-fiber diets reduce ghrelin and insulin, while improving satiety. Fiber intake improves hormonal balance linked to fullness.
INTERPRETATION
Without satiety:
Diets fail,
Hunger increases,
Weight rebounds.
Satiety is the difference between temporary loss and long-term success.