Inclusion Criteria:

• BMI 27-40 Kg/m2
• Metabolic syndrome according to International Diabetes Federation Task Force on Epidemiology and Prevention; National Heart, Lung, and Blood Institute; American Heart Association; World Heart Federation; International Atherosclerosis Society; and International Association for the Study of Obesity
• Stable weight in the last 3 months (weight changes < 4Kg)
• Be able to give informed consent

Exclusion Criteria:

• Have a diagnosed illness that interferes with the recommendations proposed in the intervention.
• Women with established menopause.
• Pregnant or breastfeeding women.
• Serious psychiatric illness/disorder.
• Social, cultural or psychological factors that may affect adherence to the intervention protocol.
• Inability to communicate with study staff.
• Inability to follow recommended diet or inability to engage in physical activity.
• Low likelihood of modifying dietary habits according to the different stages of change according to the Prochaska and DiClemente model.
• Difficulty attending scheduled appointments within the intervention due to work schedule conflicts, travel plans, scheduled surgeries, among other reasons.
• Therapeutic non-compliance.
• Participating in a professionally-led nutritional intervention.
• Being under medical treatment that affects weight, intake or energy expenditure in the 3 months preceding the start of the study.

Smokers who have changed their smoking habit in the 6 months preceding the start of the study (including starting or stopping smoking).

- Participation in another trial that may interfere with this proposed study.