Final answer:
The incorrect statement is that the minimum recommended caloric intake is 800 kcals/day. In fact, the average adult requires more than this, typically between 1500 to 2000 calories daily. Other statements about weight loss, very low-calorie diets, yo-yo dieting, and metabolic rate are generally accurate.
Step-by-step explanation:
The incorrect statement is 'The minimum recommended caloric intake is 800 kcals/day'. The minimum recommended caloric intake for an average adult is actually greater than 800 kcal/day, with typical recommendations ranging from 1500 to 2000 calories daily for general health and maintenance.
Extreme weight changes can indeed lead to a reduction in both body water and lean mass. Prescription of very low-calorie diets should be left to medical professionals due to potential health risks, and effects such as decreased metabolic rates are part of why yo-yo dieting can have negative health impacts over time. It's also important to note, as your question implies, that the type of food ingested can affect metabolic rate, with processing of proteins requiring more energy than that of carbohydrates.
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