Evaluate this claim: 'High-protein diets always lead to healthy long-term weight maintenance because protein increases satiety.' What is the best evidence-based conclusion?

Protein intake has no effect on satiety or weight maintenance and therefore is irrelevant to any dietary strategy.

High-protein diets can improve satiety and help with maintenance, but they must be combined with balanced caloric intake, resistance training, and adequate micronutrients for long-term health; protein alone is not a guaranteed solution.

Eating only protein sources while ignoring vegetables and whole grains is the single best approach to prevent chronic disease related to weight.

High-protein diets unconditionally guarantee healthy long-term outcomes and eliminate the need for physical activity or attention to total calories.