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Caffeine Overload |
Marc Straus | CWK Network |
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“It’s cool to hang out maybe at the coffee shop, and these drinks are definitely catering towards that (teenage) population I think.”
– Rachel Brandeis, American Dietetic Association
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For the past few years, 18-year-old Pam Shelton says she’s been drinking about 10 caffeinated drinks a day. “I probably have three cups of coffee and the rest soda,” she says.
Terry Kleeblatt, also 18, figures he averages about eight a day. “I drink a lot of Diet Coke all day (and) coffee, lot of ice coffee, every day,” he says.
At 50 to 100 milligrams of caffeine per drink, both probably consume at least 500 milligrams of caffeine a day. “The safe recommended intake for caffeine for adults is between 200 and 300 milligrams a day,” says Rachel Brandeis with the American Dietetic Association.
Experts say caffeine has two effects that are particularly troubling for teenagers. First, it can interfere with a good nights sleep. “And teenagers, because they are growing so rapidly, actually have an increased demand for sleep,” says Brandeis.
Second, kids who drink a lot of caffeinated drinks are often short on calcium, in part because they usually drink less milk, but also because caffeine depletes calcium that’s already in the body. “This is a peak time in terms of growth, especially in terms of building bone density and bone mass. And increased levels of caffeine can in fact increase calcium excretion through urine,” says Brandeis.
Experts say if your teenager is having trouble sleeping or is irritable, it may be a red flag for parents to ask about caffeine intake. “Chances are your teenager may not realize how much caffeine is in a cup of coffee or one of those frozen drinks,” says Brandeis. “So always ask, and always offer alternative beverages at home — whether it’s 100 percent juice, whether it’s milk or dairy products — to make sure that, you know, your teen is getting enough calcium.”
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By Amye Walters
CWK Network, Inc.
Caffeine can be found in everything from chocolate bars to over-the-counter analgesics, many cold remedies, and weight-loss pills.
Sufi priests made the first caffeinated drink out of coffee-bean husks, then used the liquid to fuel all-night religious ceremonies. Early Europeans witnessing these maniacal events dubbed the participants “whirling dervishes.”
W hile other favorite teen beverages such as soda pop and high-energy drinks also contain caffeine, ounce for ounce they can’t match the high level of caffeine in brewed coffee. Some link the popularity of frozen coffee drinks such as the Starbucks Frappuccino and Caribou Cooler to the current craze for caffeine among teens who begin with these milk shake-like beverages and soon move on to hot drinks, eventually graduating to espressos on their way to becoming coffee connoisseurs.
Caffeine isn’t a drug like amphetamines or cocaine because it doesn’t act on the areas of the brain related to reward, motivation and addiction. One can crave caffeine, but doesn’t absolutely need it. Caffeine is by far the most widely used psychoactive drug in the world, easily surpassing both alcohol and nicotine. A study of java-drinking trends by the National Coffee Association showed that, as of 2000, a record 79 percent of U.S. adults consumed coffee.
Caffeine’s molecular structure is very similar to that of adenosine, an inhibitory brain substance found in many animals, including humans. Animal studies show that adenosine could be somnolent, or sleep-inducing. When people need sleep, their adenosine levels are high, which seems to trigger the brain into wanting to shut down. The longer you’re awake, the more adenosine gradually accumulates in your brain. This surplus binds to specialized adenosine receptors, depressing nervous-system activity and making you groggy. Getting sufficient sleep clears the chemical from your system. An alternative to clearing adenosine: You can block it before it has a chance to make you sleepy. Caffeine does this by binding to adenosine receptors before the adenosine gets there.
- The coffee industry rakes in an estimated $18 billion per year.
- As a nation, we down 350 million cups of coffee a day
- The number of teens drinking coffee in restaurants or cafes has increased 12 percent this year and 15 percent in the previous year.
- Caffeine has no nutritional value, is not needed for any physiologic function and is commonly abused by the tired and stressed.
- Coffee can sometimes trigger gastrointestinal distress.
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By Amye Walters
CWK Network, Inc.
Caffeine is a drug. It can disrupt teenagers’ already erratic wake-sleep cycle, which can have harmful effects on short-term memory and learning ability and can lead to decreased productivity, negative mood, loss of behavioral control, depression and an increase in impulsiveness. A large caffeine intake can lead to increased heart rate and increased blood pressure in teenagers. Caffeine’s effects on teenagers can be greater than on adults because of teens’ varying tolerance levels and low body weight.
It’s important to understand caffeine causes physical dependence in its users, meaning users go through withdrawal symptoms, which can range from throbbing headaches to fatigue to irritability.
- Caffeine is a drug that affects mood, behavior and nervous system.
- Teens who drink coffee socially should drink decaf coffee or half and half to avoid the harmful effects of caffeine.
- Teens should consume no more than three caffeinated soda beverages or one super-caffeinated coffee beverage a day.
- For those hoping to ace a critical exam through a short-lived boost in IQ, the current evidence indicates that caffeine doesn’t make you smarter.
- Caffeine can have a dramatic effect on alertness but as you move to higher-order cognitive functioning, such as decision making, it has little impact.
- Know that caffeine comes in many forms. There’s a new caffeinated gum on the market: Jolt Caffeine Energy Gum. Two pieces are capable of leaching the same amount of caffeine as in a cup of coffee in just five minutes.
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The Detroit News Jolt Gum MSN Diet & Fitness National Coffee Association
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