Frostbite patients should avoid which of the following beverages?

Frostbite patients should avoid caffeine or alcohol because these substances can exacerbate the effects of frostbite and hinder the body's ability to rewarm effectively. Caffeine is a stimulant that can lead to increased heart rate and blood pressure, potentially causing further strain on the already compromised circulatory system of a frostbite victim. Alcohol, on the other hand, causes vasodilation, which may initially create a sensation of warmth but ultimately increases heat loss and can worsen tissue damage. Maintaining appropriate hydration is crucial in frostbite treatment, and beverages like water, milk, and fruit juice are beneficial as they do not have these adverse effects.