To describe an e-Health intervention to improve vegetables and fruit intake among working Mexican adults, based on the Social Cognitive Theory. We developed an e-Health intervention “neoser”, based on the Social Cognitive Theory and on results of a previous formative research conducted in a group of working adults. The main purpose of “neoser” is to increase vegetables and fruits intake (200 g per day, each). This study is a quasi-experimental pre-post single group. The participants recruitment will be carried out through e-posters by email and social media (Facebook and Instagram). Based on the literature, we consider a minimum sample size of 55 participants. “neoser” consists of 12 weekly sessions (nine educational sessions and three workshops) applying nine behavior change techniques targeting the constructs of the SCT. Strategies include support groups, reinforcement activities, a recipe book, and a handbook with activities and extra information to reinforce acquired knowledge and skills. “neoser” will be implemented through social media (Facebook, Instagram, and WhatsApp), Zoom sessions, website and YouTube channel. The sessions will last 45 minutes with 20 participants, maximum, per session. Participants will complete online questionnaires to evaluate knowledge and constructs of the SCT, and 3-day dietary records; anthropometric measured and biochemical assessments will be obtained at baseline and at the end of the intervention. The main results are the vegetables and fruit intake, constructs of the SCT and knowledge. The secondary results are weight, height, waist and hip circumference, body water and fat, muscle mass and biochemical analyzes (lipids profile and blood glucose). The comparison of the results will be performed using t-test, chi-square, confidence intervals and analysis of variance), with a significance level of P < 0.05. Not apply This intervention could contribute to the adoption and maintenance of vegetables and fruit consumption in Mexican workers and promote the use of e-Health interventions as global well-being digital strategies. Postgraduate Incorporation and Permanence Program of the National Program of Postgraduate Quality (PROINPEP) from Universidad de Guadalajara