Rebecca Chang, RDN
Clinical Dietetics Writer
Registered Dietitian with 8 years of experience in outpatient metabolic health clinics. Focuses on evidence-based dietary interventions for insulin resistance and PCOS.
Essays by Rebecca
macrosGlucose Variability After Meals: The Metabolic Signal That Average Blood Sugar Hides
HbA1c and fasting glucose describe averages. The shape of the curve after a meal — how high it rises, how fast it falls, how often it spikes — predicts cardiovascular and metabolic outcomes that the averages miss entirely.
micronutrientsThe Iron Paradox: Anemia and Overload in the Same Population
Iron deficiency is the most common nutritional deficiency in the world. Iron overload is a common preventable cause of organ damage in adults over 50. The same nutrient produces both problems, often within the same family, and the recommendations for each contradict each other.
food-scienceResistant Starch and the Cooled Rice Phenomenon
A bowl of rice cooked, cooled overnight, and reheated is a different food from a metabolic standpoint than the same rice eaten fresh. The mechanism — resistant starch retrogradation — has implications for glycemic response and gut microbiome composition that are larger than most diet conversations acknowledge.
micronutrientsMagnesium: The Quiet Deficiency Behind Cramps, Sleep, and Mood
The serum magnesium test almost always comes back normal. The intake data almost never does. The gap between what a blood draw measures and what the diet delivers explains why magnesium has become the most commonly recommended supplement in clinical nutrition — and why the recommendation keeps being necessary.
micronutrientsSugar vs Added Sugar: What Your Body Actually Responds To
A gram of sugar from a strawberry and a gram of sugar from a soft drink are chemically similar but metabolically different. The distinction lies not in the molecule but in the delivery system.