Autism is a term used to describe a group of developmental problems. Autism Speaks reports that about one in every 110 kids is diagnosed with a disorder on the autism spectrum – a number that could be increasing by up to 17 percent annually.

Throat tightness is an alarming symptom after consuming caffeine that may warrant medical attention. Caffeine is a stimulant drug that can affect various parts of your body. The substance is found naturally in tea, coffee and chocolate and may be added to soda beverages and athletic drinks.

Approximately 80 percent of adults have caffeine every day, according to the U.S. Food and Drug Administration. While many people consume caffeine for its positive effects, adverse reactions can occur. Caffeine has the potential to interact negatively with certain supplements and medications.

Coffee, tea, soft drinks, chocolate and some medications contain varying amounts of caffeine. While a small amount of this chemical increases your alertness with few noticeable side effects, even a little too much can cause discomfort.

Caffeine and taurine are two popular ingredients used in energy drinks which are growing in popularity in the United States, particularly among college students and adolescents.

According to CBS News, caffeine is America’s fuel. More than 50 percent of Americans drink three to four cups of coffee a day, which works out to more than 330 million cups. But that’s just coffee.

Many foods and beverages -- including coffee, tea and chocolate --contain caffeine. Although caffeine will not likely cause serious health complications, its use may cause symptoms such as increased heart rate, shaky hands and anxiety.

Although stomach gas from caffeine consumption is not common, it can occur. This is particularly true if you consume large quantities of caffeine.

Caffeine is a bitter substance that stimulates your central nervous system. This means it can help boost your alertness and eliminate your drowsiness, according to MedlinePlus.com. Chances are you consume some caffeine on a regular basis if you drink coffee or tea, drink soda or eat chocolate.

Hydrocodone is an opiate medication prescribed for the treatment of moderate to severe pain. It is only available in combination with other ingredients, such as acetaminophen, ibuprofen, expectorants and caffeine. Hydrocodone formulations containing caffeine are approved by the U.S.

Low-carb dieters who consume very few carbohydrates often go into ketosis. Ketosis develops when you use up your glycogen stores and need an alternate source of energy. Your body forms ketone bodies as it breaks down fat to use for energy, and you excrete ketones in the urine.

Caffeine and ginseng extract are two ingredients that commonly appear in energy drinks. While both compounds have been linked to increased sensations of alertness and mental acuity, the manner in which each one affects the body is considerably different.