Effect on Weight and Adiposity of "Home Meals" in Women With Overweight or Obesity

Obesity is a global health problem that requires effective intervention. In Mexico, 2 out of 3 adults are classed as overweight or obese. Weight gain from frequent consumption of energy dense food impairs the metabolism of lipids and glucose which causes the inflammatory state that underlies development of chronic illnesses such as cardiovascular disease. Mexican women with overweight or obesity consume on average 12 times per week food rich in sugar or fat. This indicates a high prevalence of unhealthy eating habits.

Such unhealthy habits are however determined by the modern environment. The raise in food availability is associated with increase in body weight at population level. Diverse studies indicate also an increase in the number of fast food outlets together with an increase in the frequency of eating out of the home. Therefore, people are exposed to abundance of unhealthy food that leads to acquire the habit of consuming them.

The informative education on "healthy" eating is a main intervention to abate obesity levels in the population. However, the prevalence of overweight and obesity is still increasing. In fact, if this trend continues, in 2025, 32 million of Mexican adults will achieve the diagnosis of obesity.

New perspectives for intervention are needed against obesity. We propose "home meals" as a novel strategy to enhance the effectivity of educative messages on "healthy" eating that generally presents food out of their cultural context. Our definition of "home meal" considers not only the physical space where foods are consumed but also a typical socially accepted preparation based on local foods. This proposal about "home meals" is partly made because the raise of obesity in the population coincides with the replacement of traditional diet by consumption of industrialised unhealthy food.

The present project develops an intervention that compares "home meals" vs. "healthy meals" with regards to their effect on weight and body fat. The aim is to test if the recommendation of eating "home meals" has a slimming effect and how it compares to that of the standard isocaloric recommendation of eating "healthy meals." The hypothesis is that because "home meals" are culturally tailored, they would be easier to practice, and so a similar weight/body fat loss to the "healthy meals" would be at least achieved.