Final answer:
A not successful strategy to attain a healthy weight includes following fad diets or crash dieting, which often results in immediate but unsustainable weight loss. Sustainable weight loss is best achieved through a balanced diet, increased physical activity, and making long-term lifestyle changes.
Step-by-step explanation:
Attempting to attain a healthy weight is a common goal, but not all strategies lead to success. A strategy that is not successful for weight loss is to follow fad diets that promise quick results. Such diets often restrict essential nutrients and focus on immediate weight loss rather than establishing long-term healthy eating patterns. Research indicates that a combination of a balanced, low-calorie diet and increased physical activity is the most effective approach. Relying on crash dieting or restrictive eating may result in a quick loss that is predominantly water weight, not fat, and such weight is likely to be regained.
Moreover, diets that focus on consuming 'fat-free' foods exclusively have not led to healthier outcomes; they can result in an increased intake of sugars or processed foods, which may contribute to weight gain over time. The successful dieters have been observed to make lasting changes to their lifestyle, such as regular exercise and mindful eating, which supports prolonged weight maintenance. Putting emphasis on holistic measures that include eating whole foods and adopting a more active lifestyle is considered a more effective path towards achieving a healthy weight.
Thus, the most sustainable weight loss is typically achieved with patience, steady changes to one's diet and physical activity, and an understanding that it takes time to lose weight gained over a prolonged period.