By Stormy Lee

Crystal Light is made by Kraft Foods. It is a powdered beverage that is added to water and comes in many flavors. However, there are some risks to consuming Crystal Light.

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Crystal Light Side Effects


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Headaches may occur after drinking crystal light.

Many people who drink Crystal Light complain of headaches. These range from mild to severe and occur within several hours of drinking the substance.


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Some types of Crystal Light contain caffeine.

Some flavors of Crystal Light, such as the iced tea, contain caffeine. This may cause a rapid heartbeat and a jittery effect.

Weight Gain

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Some people experience weight gain.

Despite the fact that Crystal Light is very low in calories (often 5 calories per serving), some people might experience weight gain.


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Crystal Light contains Aspartame.

Crystal Light contains an artificial sweetener called Aspartame. Aspartame has been known to cause cancer in certain individuals.

Insulin Response

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Artificial sweeteners can cause an insulin response.

Artificial sweeteners can cause an insulin response (blood glucose levels increasing). This is due to the body anticipating consuming something sweet.