**1. Introduction**

Obesity growth follows a simple formula: energy intake exceeds energy expenditure. Overweight and obesity, on the other hand, are the result of a complex series of interactions among genetic, psychological, and environmental variables. Whereas the overweight public has been offered hundreds, if not thousands, of weight-loss strategies, diets, potions, and devices, the multi-factorial causative agents of overweight challenges practitioners, researchers, and the overweight themselves to identify permanent, efficacious weight-loss and maintenance strategies [1]. The number of people who effectively lose weight and keep it off has been reported to be as low as 1–3%. In the genesis of overweight and obesity, heredity plays a role. Genes, on the other hand, cannot explain the rise in overweight people [2]. Rather, the behavioral and environmental variables that cause people to engage in too little physical activity and consume too much food

about their energy expenditure must bear the brunt of the responsibility. These are the issues that weight-loss initiatives aim to address [3]. This chapter examines the effectiveness and safety of weight-reduction techniques, as well as the combos of approaches that exist for healthy weight loss [4].

A complicated combination of environmental, biochemical, social, and cognitive factors, which are only partially understood, makes weight reduction maintenance difficult. **Figure 1** illustrates their configuration; they react differently in different patients to an extent that is difficult to predict. This answers why many people regain most of the weight they lost following a successful diet plan. Nevertheless, a small percentage of people succeed in maintaining long-term weight loss, and research into this group, which achieves their aim despite significant urges to gain weight, may assist discover the variables that lead to this preferred result [5].

To increase patients' commitment to long-term weight control, the much more current advancements of comprehensive lifestyle modification plans integrate food and physical activity guidelines with particular behavioral and cognitive methods [6]. They show that a significant portion of treated individuals may sustain a healthy body weight decrease over time. These encouraging findings have prompted the formation of multidisciplinary lifestyle modification teams to provide patients with moment longer overweight therapy [7].

The goals of this narrative review are to [8]


The components of good weight control will also be investigated, as the difficulties in sustaining weight reduction may contribute to the overweight condition. There is also a brief discussion of public policy approaches that may help prevent obesity and support people who are seeking to reduce or manage weight reduction [9].

Many types of research have been successful in inducing weight reduction in individuals; nevertheless, weight loss management has proven to be far more challenging [10]. According to a recent comprehensive analysis, weight-reduction systems have been able to produce a 9.5% weight loss from starting body weight on aggregate; unfortunately, only 54% of this loss weight was sustained one year following the treatments [11]. As a consequence, scientific proof guidelines for weight loss and maintenance techniques that people may apply are needed. Approaches based on the notion of energy equation may base on energy consumption (i.e., food) or energy expended (i.e., physical activity), or on habits that encourage improvements in either caloric intake or energy expended (i.e., self-monitoring of dietary intake) [12].

A theoretical model was developed in which elements such as nutritional intake, physical activity, and attitude were investigated for their impact on reducing weight and management. Since it was anticipated that activities connected to the energy

*Inability to Understand the Complexity of Maintaining Weight Loss and the Complications DOI: http://dx.doi.org/10.5772/intechopen.105362*

### **Figure 1.**

*In the overall population of obese patients enrolled in noninvasive weight reduction procedures, there are a number of characteristics linked to long-term weight loss stabilization.*

equation would impact weight reduction differentially than weight control, losing weight and weight control were handled as separate events within the theoretical model [13]. The paradigm also depicts the idea of recurrence, which is prevalent in this group and may be linked to the characteristics described in the paradigm [14].

Postrach et al. (2008) stated that for weight control, the first weight-loss strategy should be very broad and that most of the information and abilities gained during the weight-loss phase may be transferred to the weight-control period.
