Mariana holds a degree in Biological Sciences, specializing in biotechnology, from UCM. She also has a degree in Dietetics and Nutrition from the University of Carlemany.

Throughout her professional career, she has earned various qualifications, including a Master's degree in Digestive Disorders and Clinical Nutrition (ICNS), a Master's degree in Human Microbiota (CEU), and a postgraduate qualification specializing in Nutrition for Women: pregnancy, breastfeeding, and childhood (Enseca).

She specializes in Pediatric Nutrition (Stanford University), nutrition for women, and hormonal nutrition (ICNS), and is an expert in evidence-based microbiota management (Advanced Institute of Holistic Health), as well as Holistic Nutrition (Institute for Holistic Nutrition).