Filed under: Caffeine
If you’re looking for ways to optimize your performance or perhaps drop some weight quickly, you may be tempted by the marketing hype and claims around green coffee beans, a dietary supplement ingredient often found in weight-loss products.
Green coffee beans are the raw, unroasted seeds or “beans” of the Coffea plant. They’re a source of caffeine, but they have become popular as a dietary supplement ingredient because they also contain a chemical called chlorogenic acid that supposedly offers some health benefits.
Some research suggests that chlorogenic acid might help with weight loss and prevent heart disease, diabetes, and high blood pressure. However, there’s limited evidence to support the use of dietary supplement products with green coffee beans for weight loss or other health conditions, so consumers should beware of health claims associated with this ingredient. In fact, the Federal Trade Commission (FTC) sued a company for using unsupported weight-loss claims and fake news websites to market their green coffee extract dietary supplement. Read more in FTC’s Press Release.
Most energy drinks are now labeled with Nutrition Facts instead of Supplement Facts, but that doesn’t automatically make them safe. The most popular energy drinks contain about 80–120 mg of caffeine per serving (8 oz.)—about the same amount of caffeine in an 8-ounce coffee. Caffeine isn’t necessarily a bad thing. When used appropriately, caffeine can boost mental and physical performance. But each energy drink can or bottle often contains more than one serving, making it easier to consume larger amounts of caffeine, especially if you drink more than one per day. Too much caffeine (>400 mg) can cause nervousness, shakiness, rapid heart rate, and trouble sleeping.
In addition to caffeine, energy drinks commonly contain amino acids, vitamins, and plant-based ingredients such as guarana (which also contains caffeine) and ginseng. Although these ingredients are generally safe, there still isn’t enough reliable information about their long-term safety or how combinations of these ingredients might interact in the body.
If you drink energy drinks, here are some things to keep in mind:
- Be aware of how much caffeine (from all sources) is in each can or bottle, and limit the number you drink each day.
- Avoid caffeinated foods, beverages, and medications while using energy drinks. You may be consuming more caffeine than you realize.
- Don’t mistake energy drinks for sports drinks. Unlike energy drinks, sports drinks are designed to fuel and hydrate you during long workouts.
- Don’t mix energy drinks with alcohol. Energy drinks can mask the feeling of intoxication but still leave you impaired.
- Find other ways to energize yourself. It’s best to get the sleep your body needs, but you can try other ways to stay alert, such as exercising or listening to upbeat music.
It’s cause for concern: Approximately 30% of teens consume energy drinks on a regular basis. Energy drinks provide no nutritional benefit and can actually pose health risks to adolescents, including increased heart rate, high blood pressure, anxiety, digestive problems, sleep disturbances, dehydration, and even death. Teens who consume energy drinks are also more likely to engage in unhealthy behaviors such as drinking more sugar-sweetened beverages, smoking cigarettes, and using drugs and alcohol.
Many of the negative effects associated with energy drinks are due to the large amounts of stimulants in these beverages. Their caffeine content can range from 50 to more than 500 mg per can or bottle. The American Academy of Pediatrics recommends that children and teens:
- consume no more than 100 mg of caffeine per day (equal to about 2 cans of caffeine-containing soda or one 8 oz. cup of coffee) and
- avoid energy drinks altogether.
However, the amount of caffeine teens consume from energy drinks is trending upwards, in part due to heavy marketing with celebrity athletes. Be sure to talk to your teens about the potential problems associated with energy drinks, and make sure they don’t confuse them with sports drinks.
The Food and Drug Administration (FDA) is again warning about the dangers of powdered pure caffeine. At least 2 deaths (both teenagers) were associated with it in 2014, yet it continues to be sold, primarily in bulk online. FDA recently sent warning letters to 5 distributors of pure powdered caffeine, warning about potential serious health effects. FDA notes that it’s difficult to determine the difference between a safe amount and a toxic amount but that one teaspoon is roughly equivalent to 28 cups of coffee. For more information, read FDA’s update and HPRC’s 2014 article.
Many factors affect your sleep, including stress and exercise, but your diet can also have a huge impact on the quality of your sleep, particularly in the hours before you go to bed. By improving your evening food habits you can sleep better, which can have a positive impact on your mental and physical performance, immune function, relationships, and overall health and well-being. Try these tips to be on your way to a better night’s sleep:
- Limit caffeine. Caffeine can disturb your sleep even many hours later. If you typically drink coffee or tea in the afternoon or after dinner, opt for a decaffeinated version. And be wary of hidden sources of caffeine.
- Avoid alcohol. Some people think of alcoholic beverages as a nightcap to help you sleep better. While it may help you go to sleep faster, it also reduces sleep quality by waking you up in the middle of the night.
- Eat balanced meals. Eating balanced meals daily will help you get all the nutrients you need, such as B vitamins and magnesium, to promote better sleep. A balanced plate is ½ a plate of fruits and vegetables, ¼ plate of whole grains or starchy vegetables (corn, peas, potatoes), and ¼ protein, plus a serving of healthy fat (oil, avocado). In addition, your body takes long to digest fats, so eating too much fat may keep you from falling asleep.
For more strategies on how to improve your sleep, check out HPRC’s Sleep Optimization section.
Stimulants can be dangerous to your health, especially in large quantities, but they’re what give energy drinks their “punch.” You may already know caffeine is a major stimulant found in energy drinks. But do you know that energy drinks often contain other stimulants? These can include “hidden sources” of caffeine (such as guarana, green coffee bean, green tea, and yerba mate), yohimbe, and synephrine (bitter orange).
Many energy drinks, however, aren’t labeled with the amounts of caffeine or other stimulants in them. Some or all of these ingredients are often part of “proprietary blends,” so it’s impossible to determine from the label the exact amount of each ingredient you would be taking. Furthermore, energy drinks might be mislabeled or marketed as sports drinks, causing even more confusion.
Remember, stimulants come in many different forms, so Operation Supplement Safety (OPSS) put together a list of stimulants found in dietary supplements to help you identify these potentially harmful ingredients. And to help you understand what’s in your energy drink, check out the OPSS infosheet on energy drink labels, which includes helpful notes about ingredients.
Coffee, energy drinks, energy shots, soda—we’re surrounded by these products, and many are marketed specifically to teens. Their advertisements make caffeine seem a harmless and effective boost to help teens meet the demands of school and after-school activities. Three of four U.S. children and young adults now consume some form of caffeine every day.
Teens shouldn’t consume more than 100mg of caffeine (roughly the amount in an average small cup of coffee) per day. That’s enough caffeine to give you energy and help you stay alert. But too much caffeine can be a serious problem. Signs that you’ve had too much caffeine can be jitters, nervousness, increased heart rate, and an upset stomach. For more about the symptoms of too much caffeine, read FDA’s article.
Many drinks and foods that contain caffeine don’t clearly say so on the label. Energy drinks, for example, can contain lots of different forms of caffeine, such as guarana, green tea extract, and yerba mate. Although you might see these listed on the label, you still might not see the total amount of caffeine listed. Energy drinks don’t have to report how much caffeine is in them. So think twice about how many of them you drink, and learn more from HPRC’s article about energy drinks.
And for athletes: Don’t use energy drinks to replace sports drinks for extra energy. The same goes for other beverages with caffeine: sodas, coffee, and tea. Sports drinks are for hydrating and replacing electrolytes and other nutrients lost while exercising. Water is best in most cases!
Just because something contains caffeine doesn’t mean you have to completely eliminate it. Be aware of all the different sources of caffeine and try not to overdo it. And be sure to watch HPRC’s “Caffeine & Teens” video for more from a teenager’s perspective.
Based on a blog by HPRC intern Diana Smith. Diana is a military teen and high-school sophomore who is interested in science and enjoys drawing in her downtime.
The Food and Drug Administration (FDA) is warning consumers about powdered pure caffeine, particularly as sold in bulk on the Internet. At least one death has been associated with the use of such products, and FDA advises consumers about the potency of powdered pure caffeine. See FDA’s Consumer Advice, which includes information about how to report an adverse event.
According to this consumer resource from FDA, you should limit your caffeine intake to just 100–200 mg per day (about 5–10 ounces of coffee). Taking large doses of caffeine—roughly 400–500 mg—at one time can result in a serious condition known as “caffeine intoxication.” Some symptoms of caffeine intoxication are minor and include nausea, vomiting, agitation, nervousness, or headache. Other symptoms can be more life-threatening, such as rapid heartbeat, electrolyte imbalance, very high blood sugar, or high levels of acid in the blood, which can cause seizures. See the OPSS FAQ to help you avoid hidden sources of caffeine.
The trend of adding caffeine to new food products has led the FDA to take another look at caffeine regulations. In particular, they have decided to look into caffeine being added to foods, as reported in this Consumer Update. The FDA approved the addition of caffeine to colas (specifically) in the 1950s, but the addition of caffeine to foods and beverages popular with children and adolescents, such as waffles, chewing gum, and energy drinks, has prompted them to take a fresh look at the possible impact of caffeine on children and adolescents’ health.
Currently, the FDA has not set a safe amount of daily caffeine consumption for children. Medical professionals discourage any caffeine consumption and state that children and teens should take in no more than 100 mg of caffeine per day. To put that in perspective, an eight-ounce cup of coffee typically contains about 100 mg (or more), and the most popular caffeine-containing sodas contain around 30 to 55 mg in a 12-ounce can (a 12-ounce soda cannot contain more than 68 mg of caffeine). Not knowing how much caffeine and other stimulants are contained in the drinks and foods children eat is a concern. In the meantime, for a better understanding of the effects of caffeine, read this article from the American Academy of Pediatrics.
It can be tough figuring out the truth about the health benefits of many natural products. One product that’s getting a lot of attention these days is green coffee beans. As a Warfighter looking for ways to optimize your performance or perhaps drop some weight quickly, it’s easy to be overwhelmed by all the marketing hype and claims, especially if it’s an appealing message. Make sure you get the facts.
Green coffee beans are the raw, unroasted seeds or “beans” of the Coffea plant. They contain a chemical called chlorogenic acid (CA) that supposedly offers some health benefits. Roasting reduces the amount of CA in coffee beans; as a result, green coffee beans contain more CA than the roasted beans you use for your morning coffee. Some research suggests that CA might prevent heart disease, diabetes, and high blood pressure, and help with weight loss. But it’s important to note that most of this research is preliminary, and there just isn’t enough evidence to say that CA will definitely help with any of these health conditions.
Although no serious side effects have been reported from green coffee beans in their natural form, some dietary supplement products containing green coffee beans have been found to contain undeclared drugs, insects, and mold. Of the 126 products containing green coffee beans ranked by the Natural Medicines Comprehensive Database, 40 have been assigned a rating of “1” or “2,” which indicates there are serious concerns about their safety and effectiveness. None have a rating in NMCD’s green zone, which suggests that there are some concerns about them all. Note also that green coffee beans are not always the only active ingredient, so be sure to check the product label.
It’s also important to note that green coffee beans contain caffeine. Side effects of consuming too much caffeine are all too familiar—difficulty sleeping, rapid or irregular heartbeat, nervousness, nausea, and vomiting. Pregnant and breastfeeding women, or those who have been diagnosed with certain medical conditions (including anxiety, diabetes, irritable bowel syndrome, high blood pressure, or osteoporosis) should check with their doctor before consuming green coffee beans. For more information on caffeine, read the OPSS FAQ on caffeine.