Natalie Simpson's List: Gr. 10 Science Reactions in History

• igher doses of caffeine can cause anxiety, dizziness, headaches, and the jitters. Caffeine can also interfere with normal sleep
• consuming as little as 100 mg of caffeine a day can lead a person to become "dependent" on caffeine. This means that someone may develop withdrawal symptoms (like tiredness, irritability, and headaches) if he or she quits caffeine suddenly.
• Teens should try to limit caffeine consumption to no more than 100 mg of caffeine daily
• Caffeine sensitivity is most affected by the amount of caffeine a person has daily. People who regularly take in a lot of caffeine soon develop less sensitivity to it. This means they may need more caffeine to achieve the same effects
• Caffeine may also cause the body to lose calcium, and that can lead to bone loss over time. Drinking caffeine-containing soft drinks and coffee instead of milk can have an even greater impact on bone density and the risk of developing osteoporosis.
• Caffeine can aggravate certain heart problems. It may also interact with some medications or supplements
• If you are stressed or anxious, caffeine can make these feelings worse.
• Although caffeine is sometimes used to treat migraine headaches, it can make headaches worse for some people.

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• Sulfuric acid is corrosive and can cause severe irritation or corrosive damage if inhaled
• Sulfuric acid is corrosive and can cause severe irritation and burns which may result in permanent scarring. Extensive acid burns can result in death. The severity of injury depends on the concentration of the sulfuric acid solution and the duration of exposure.
• Sulfuric acid is corrosive and can cause severe irritation (redness, swelling and pain) and permanent damage, including blindness
• Sulfuric acid is corrosive and will cause burns to the mouth, throat, esophagus and stomach if ingested.

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• Health Canada's recommendations on caffeine intake for women of child-bearing age and children were lowered in 2003 based on new research. For the rest of the general population of healthy adults, the long-standing advice still applies of no more than 400 mg of caffeine per day, the equivalent of about three 8-oz (237 ml) cups of brewed coffee.
• Caffeine is a natural ingredient found in the leaves, seeds or fruit of a number of plants, including coffee, tea, cocoa, kola, guarana and yerba maté. It is also manufactured and used as a food additive in some carbonated drinks, and as an ingredient in certain drug products, such as cold and headache remedies.

• Canadian adults get an estimated 60% of their caffeine from coffee and about 30% from tea. The remaining 10% comes from cola beverages, chocolate products and medicines.

   

  For children aged one to five, about 55% comes from cola drinks, about 30% from tea, and about 14% from chocolate. The rest comes from other sources, including medicines

• For children age 12 and under, Health Canada recommends a maximum daily caffeine intake of no more than 2.5 milligrams per kilogram of body weight. Based on average body weights of children, this means a daily caffeine intake of no more than:

   
   
  • 45 mg for children aged 4 - 6;
   
  • 62.5 mg for children aged 7 - 9; and
   
  • 85 mg for children aged 10 - 12.
• For women of childbearing age, the recommendation is a maximum daily caffeine intake of no more than 300 mg, or a little over two 8-oz (237 ml) cups of coffee.
• For the rest of the general population of healthy adults, Health Canada advises a daily intake of no more than 400 mg
• Some of the "energy drinks" that are now on the market contain about as much caffeine per serving as an 8-oz. cup of brewed coffee. Some, however, have a higher caffeine content.
• By law, caffeine does not have to be listed on labels unless it has been added to the product separately as a pure substance.
• Health Canada's scientists continue to review new research findings to ensure that recommended daily caffeine intake levels are based on the results of the best scientific evidence available. In addition, Health Canada takes an active role in providing information about the potential health effects of caffeine to help Canadians make healthy food and beverage choices.

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• • Regular coffee drinkers were 80 percent less likely to develop Parkinson's disease.
  • Two cups a day reduced subjects' risk for colon cancer by 20 percent.
  • Two cups a day caused an 80 percent drop in the odds of developing cirrhosis.
  • Two cups a day cut the risk of developing gallstones in half.
• Some of these findings may have something to do with other healthful properties of the coffee bean, but most can be linked to caffeine directly
• Despite these recent findings, most doctors still recommend moderation in regard to caffeine intake

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• Dopamine is a neurotransmitter that activates pleasure centers in certain parts of the brain. Heroin and cocaine manipulate dopamine levels by slowing down the rate of dopamine reabsorption. Caffeine increases dopamine levels in the same way.
• this dopamine connection is what contributes to caffeine addiction.
• Caffeine blocks adenosine reception so you feel alert. It injects adrenaline into the system to give you a boost. And it manipulates dopamine production to make you feel good
• once caffeine-induced adrenaline wears off, you face fatigue and depression
• having your body in a state of emergency, jumpy and irritable all day long, isn't very healthy
• Adenosine reception, which is affected by caffeine, is important to sleep, and especially to deep sleep
• your body will probably miss out on the benefits of deep sleep.
• The cycle continues day after day

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• This binding causes drowsiness by slowing down nerve cell activity. In the brain, this also causes blood vessels to dilate, most likely to let more oxygen into that organ during sleep.
• causes drowsiness by slowing down nerve cell activity

• Caffeine can be found in many weight loss pills to boost the metabolism.
• For adults, caffeine is sometimes used to kick-start other medications. It improves the effectiveness of aspirin or acetaminophen, and is used with a drug called ergotamine to treat cluster and migraine headaches.

• Caffeine occurs naturally in many plants, including coffee beans, tea leaves and cocoa beans
• There could be anywhere from 3 to 63 milligrams of caffeine in a 50-gram bar of chocolate
• chocolate milk and hot cocoa are mostly milk or water, they contain far less caffeine on average -- less than 8 milligrams per 5-ounce (150-milliliter) serving

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• Caffeine is a naturally occurring chemical stimulant called trimethylxanthine. Its chemical formula is C8H10N4O2
• medically useful to stimulate the heart and also serves as a mild diuretic, increasing urine production to flush fluid out of the body.
• In its pure form, caffeine is a white crystalline powder that tastes very bitter
• It provides a "boost of energy" or a feeling of heightened alertness.
• Caffeine is unlike many other drugs in that it is abundant in what we eat and drink

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• Around 90 percent of Americans consume caffeine every single day in one form or another
• More than half of all American adults consume more than 300 milligrams of caffeine every day, making it America's most popular drug by far
• Scandinavian nations such as Finland consume more caffeine per capita -- mostly in coffee -- than any other country
• Research by the U.S. Food and Drug Administration (FDA) and the American Medical Association (AMA) has led these groups to consider 300 milligrams (about two cups of coffee) the upper limit of a moderate daily dose. But roughly 20 percent to 30 percent of Americans consume more than 600 milligrams -- considered a high dose of the drug -- on a typical day
• Caffeine is a natural component of chocolate, coffee and tea, and is added to colas and energy drinks
• recognizes caffeine withdrawal as a medical syndrome, yet it's a common ingredient in diet pills and some over-the-counter pain relievers and medicines, and it's being studied for its potential benefits in battling Parkinson's disease, Alzheimer's and even cancer

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• powerful stimulant to the central nervous system
• The Chinese first discovered the effects of caffeine in the form of medicinal tea about five thousand years ago, for the purpose of staying awake.
• It is found in tea, coffee, kola, cocoa, and guarana.
• Synthetic caffeine is mainly produced by the chemical synthesis of urea as the basic raw material
• Most people today use it for energy purposes, because it increases mental alertness, which is needed to stay focused
• be a very harmful drug if too much is consumed. It is a mood altering and addictive compound. It can cause nervousness and insomnia

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