Final answer:
Adolescents and young adults are at risk for fluid and electrolyte imbalances resulting from fad dieting.
Step-by-step explanation:
Fluid and electrolyte imbalances resulting from fad dieting can occur in any age group, but adolescents and young adults are particularly at risk. Fad diets often involve severe calorie restriction and imbalanced nutritional intake, which can lead to dehydration, depletion of essential electrolytes, and disruption of the body's fluid balance.
Since adolescents and young adults are still growing and developing, these imbalances can have a significant impact on their overall health.