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An energy drink is a type of beverage containing stimulant drugs, chiefly caffeine, which is marketed as providing mental and physical stimulation. They may or may not be carbonated and many also contain sugar or other sweeteners, herbal extracts and amino acids. They are a subset of the larger group of energy products, which includes bars and gels, and distinct from sports drinks, which are advertised to enhance sports performance. There are many brands and varieties of energy drinks. Coffee, tea and other naturally caffeinated beverages are usually not considered energy drinks. Other soft drinks such as cola may contain caffeine, but are also not energy drinks. Some alcoholic beverages, such as Buckfast Tonic Wine, contain caffeine and other stimulants. According to the Mayo Clinic, it is safe for the typical healthy adult to consume a total of 400 mg of caffeine a day. This is equivalent to 4 cups of coffee or 2 energy shots. Energy drinks have the effects caffeine and sugar provide, but there is little or no evidence that the wide variety of other ingredients have any effect. Most of the effects of energy drinks on cognitive performance, such as increased attention and reaction speed, are primarily due to the presence of caffeine. Advertising for energy drinks usually features increased muscle strength and endurance, but there is little evidence to support this in the scientific literature. Energy drinks have been associated with health risks, such as an increased rate of alcohol-related injury,〔 and excessive or repeated consumption can lead to cardiac and psychiatric conditions.〔〔 ==Uses== Energy drinks are marketed to provide the benefits among health effects of caffeine along with benefits from the other ingredients they contain. Health experts agree that energy drinks which contain caffeine do provide the effects of caffeine.〔 The consumption of alcohol drinks combined with energy drinks is a common occurrence on many college campuses. The alcohol industry has recently been criticized for marketing cohesiveness of alcohol and energy drinks. The combination of the two in college students is correlated to students experiencing alcohol-related consequences, and several health risks. There is no good evidence that other ingredients in energy drinks provide further benefits, even though the drinks are frequently advertised in a way that suggests they have unique benefits.〔 The dietary supplements in energy drinks may be purported to provide detoxification, sustain mental process, protect heart health, and reduce muscle fatigue.〔 None of these claims are backed by good evidence.〔 Various marketing organizations have described energy drinks by saying their beverage "gives you wings", is "scientifically formulated", or that it is a "killer energy brew".〔 When mixed with alcohol, either as a prepackaged caffeinated alcoholic drink, a mixed drink, or just a beverage consumed around the same time as alcohol, energy drinks are often consumed in social settings. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Energy drink」の詳細全文を読む スポンサード リンク
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