About Mateo
Mateo Fernández is a Registered Dietitian (Dietista-Nutricionista) with a Master of Science in Human Nutrition and seven years of clinical practice across outpatient diabetes and renal clinics in Bogotá. He joined The Calorie Guardian to pressure-test the advice these apps give — not just the calories they count.
His reviews focus on the questions clinicians actually ask: does the app track sodium, potassium, fiber, and added sugar accurately? Can it support a renal or low-FODMAP plan without dangerous gaps? Does its AI guidance stay within evidence-based bounds, or drift into fad territory?
Mateo reviews every health-claim, allergy, and medical-diet section before it publishes, and flags any app whose coaching could mislead someone managing a condition.