Which summary best explains why fat blockers may help short-term weight loss but pose concerns for long-term nutritional status?

• A. Fat blockers permanently rewire metabolism so that fat is converted into muscle over time; they present no nutritional concerns but can reduce body fat to dangerously low levels in the short term.
• B. Fat blockers are inert supplements with no measurable effect on calories or vitamin absorption; any observed weight loss is due to placebo and therefore there are no long-term risks.
• C. Fat blockers directly supply fat-soluble vitamins to users; therefore they protect against malnutrition while promoting appetite suppression, making long-term supplementation entirely safe.
• D. Fat blockers reduce caloric absorption from fat, modestly aiding weight loss, but also limit absorption of essential fatty acids and fat-soluble vitamins, raising the risk of deficiencies and digestive side effects with prolonged use.

Answer: (D)