In both the scientific literature and public sphere there has been debate over which dietary strategy is the most effective for weight loss. Research comparing diets with different macronutrient contents suggests that a) there are large interindividual difference in weight loss success regardless of diet macronutrient composition b) those with a higher protein intake achieve greater weight loss success c) taking into consideration diet preference when prescribing a diet is important for patient success and d) when matched for calories, low fat and low carbohydrate diets offer equal benefit. In addition, research has demonstrated the ability of diet breaks to mitigate unfavourable metabolic adaptations which occur in response to weight loss. Furthermore, behavioural interventions, including education and regular contact with a health care practitioner, have proven to be a large determinant of patient weight loss.
Eleven adults weighing between 65-100 kg joined the Metagenics Research Clinic. Based on preference and suitability, subjects were allocated a low fat (20%) or low carbohydrate (20%) diet, matched for protein (30%) for 10 weeks. Subjects were provided with a protein-based meal substitutes to replace one meal daily, and a probiotic containing Bifidobacterium lactis B-420™ and Bifidobacterium lactis HN019™. Subjects received education on food choices and portion control, as well as frequent practitioner contact, either with group sessions, one-on-one practitioner support, or both. Diet breaks were introduced at 6 weeks. At the end of the intervention, subjects lost between 3.7 and 14.4% of their body weight or between 3.6 and 18.1 kg.
This case series showcases the utility of practitioner-led, personalised and comprehensive weight loss programs.