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Caffeine in Biological News

Your brain on -- and off -- caffeine

... of coffee and other caffeinated products, caffeine withdrawal is often characterized by a headache, ... to investigate the biological mechanisms of caffeine withdrawal in a paper published recently in the ... brain electrical activity and blood flow during caffeine withdrawal to examine what was taking place ...

Caffeine appears to be beneficial in males -- but not females -- with Lou Gehrig's disease

... including oxidative stress. Coffee, caffeine and ALS Researchers agree that ALS is a ... several components, the largest of which are caffeine and chlorogenic acid, a dietary polyphenol that ... The researchers examined the effect of coffee, caffeine and chlorogenic acid supplementation on markers ...

Caffeine appears to be beneficial in males -- but not females -- with Lou Gehrig's disease

... including oxidative stress. Coffee, caffeine and ALS Researchers agree that ALS is a ... several components, the largest of which are caffeine and chlorogenic acid, a dietary polyphenol that ... The researchers examined the effect of coffee, caffeine and chlorogenic acid supplementation on markers ...

A little java makes it easier to jive, researcher says

... met his teammates at a coffee shop to fuel up on caffeine prior to hitting the pavement on long-distance training rides. "The notion was that caffeine was helping us train harder to push ourselves a ... "I think intuitively a lot of people are taking caffeine before a workout and they don't realize the ...

Energy drinks: The coffee of a new generation?

... "These drinks are made up of sugar and caffeine and can have a negative impact on health." ... says Ct. "Because they have too much sugar. And caffeine doesn't necessarily improve physical performance. ... studies have demonstrated that strong doses of caffeine can increase hypertension, cause heart ...

A low dose of caffeine when pregnant may damage the heart of offspring for a lifetime

... Journal shows that the equivalent of one dose of caffeine (just two cups of coffee) ingested during ... "Our studies raise potential concerns about caffeine exposure during very early pregnancy, but further ... air," with one group having been injected with caffeine and another injected with saline solution. The ...

Post-exercise caffeine helps muscles refuel

... when athletes ingest both carbohydrate and caffeine following exhaustive exercise, new research from ... Applied Physiology shows. Athletes who ingested caffeine with carbohydrate had 66% more glycogen in their ... therapy and sports drinks such as Gatorade. caffeine aids carbohydrate uptake It is already ...

Energy drinks may pose risks for people with high blood pressure, heart disease

... Most energy drinks contain high levels of caffeine and taurine, an amino acid also found in ... age 26) were asked to abstain from other forms of caffeine for two days prior to and throughout the study. ... an energy drink that contained 80 milligrams of caffeine and 1,000 milligrams of taurine. Researchers ...

Mixing large doses of both acetaminophen painkiller and caffeine may increase risk of liver damage

... Sept. 26 2007 -- Consuming large amounts of caffeine while taking acetaminophen, one of the most ... amounts of medications that intentionally combine caffeine and acetaminophen for the treatment of migraine ... they suggest that consumers may want to limit caffeine intake -- including energy drinks and strong ...

Childhood chicken pox could affect oral health years later

... that patients consume 1,000 to 1,200 milligrams of calcium a day, add vitamin D to their diet, exercise and weight train, quit smoking and decrease caffeine and alcohol intake. Symptoms of osteonecrosis: Pain, swelling or infection of the gums Loosening of teeth Poor healing of the gums ...

The benefits of green tea in reducing an important risk factor for heart disease

... artery dilatation increased significantly after drinking green tea, with a peak increase of 3.9 per cent 30 minutes after consumption. The effect of caffeine consumption (or hot water) was not significant. While black tea has been associated with improved short and long-term endothelial performance, ...

Canadian Society of Exercise Physiology Annual Scientific Conference

... will participate in 14 symposia to discuss a variety of topics including: Caffeine, Coffee, Exercise and Health Explores the actions of caffeine in the body and how it can enhance exercise performance, Thursday, November 15, 2 to 3:45 p.m. Heart Disease, Diet and a Little Bit of Sex ...

Sugary drinks, not fruit juice, may be linked to insulin

... drinks (regular and caffeine-free colas and other carbonated beverages containing sugar), diet soft drinks (low-calorie colas with and without caffeine and other low-calorie carbonated beverages), and fruit juice (e.g., apple juice or apple cider, orange juice, and grapefruit juice). One serving of a ...

American Chemical Society's Weekly PressPac -- Aug. 15, 2007

... coffee. But the main cause of coffee bitterness has been largely unexplored until now, said Thomas Hofmann and colleagues. Everybody thinks that caffeine is the main bitter compound in coffee, but thats definitely not the case, Hoffmann said. Only about 15 percent of javas perceived bitterness is due ...

Negative effects of caffeine are stronger on daytime sleep than on nocturnal sleep

... Sacré-Coeur de Montréal. "We already knew that caffeine has important effects on nocturnal sleep. It ... deep sleep. We have shown that these effects of caffeine on sleep are way stronger when taken at night ... "We often use coffee and other sources of caffeine during the nighttime to counteract sleepiness ...

First biomarker for human sleepiness identified in fruit flies

... Shaw's lab previously showed that they can use caffeine and methamphetamine to keep flies awake. caffeine inflicts sleep debt, causing flies to sleep for ... levels in response to these drugs, they found caffeine drove amylase activity up while methamphetamine ...

Psst! Coffee drinkers: Fruit flies have something to tell you about caffeine

... them to ignore caffeine's taste and consume the caffeine as if it were not there. "No, you won't see ... between sweet and bitter substances, flies avoid caffeine and other bitter-tasting chemicals. But flies ... taste-receptor protein, called Gr66a, consume caffeine because their taste-receptor cells don't fire in ...

Coffee makes us more likely to say 'yes'

... say 'yes', coffee can help. Moderate amounts of caffeine can have an impact on the extent to which we can ... from the University of Queensland found that with caffeine consumption we are more likely to attend to, and ... participants consumed orange juice with either caffeine (equivalent to two cups of coffee) or ...

No link found between caffeine intake and development of hypertension in women

... have indicated a possible association between caffeine intake and the risk of hypertension. Short-term studies have demonstrated that caffeine intake acutely increases blood pressure, but over ... of this effect does occur. A long-term effect of caffeine intake on the risk of developing hypertension ...

Noise And Delays Explain Why Some Genes Oscillate In Activity

... basis for the drug's effects. Previous studies have shown that caffeine and amphetamine can reduce the deleterious cognitive effects of sleep deprivation. But as anybody who has indulged one latte too many knows, caffeine and other powerful stimulants have limited usefulness. These potentially ...

Clocking in Pillow Time without the Pillow

... basis for the drug's effects. Previous studies have shown that caffeine and amphetamine can reduce the deleterious cognitive effects of sleep deprivation. But as anybody who has indulged one latte too many knows, caffeine and other powerful stimulants have limited usefulness. These potentially ...

Sleep disturbances affect classroom performance

... do so for more than an hour. Keep a regular schedule. Don’t read, write, eat, watch TV, talk on the phone or play cards in bed. Do not have any caffeine after lunch. Do not go to bed hungry, but don’t eat a big meal before bedtime either. Avoid any rigorous exercise within six hours of your ...

Drug treatment improves learning in mice with Down syndrome symptoms, Stanford/Packard study shows

... learning. Conversely, alcohol or sedatives impair our ability to learn." But as any overenthusiastic college student can attest, too much caffeine can backfire. The same is true with high doses of PTZ, which can cause seizures. In fact, after some brief, inconclusive studies on cognition ...

Underweight women at greater risk of miscarriage

... the causes of the majority of miscarriages are not fully understood. Many supposed risk factors, for example alcohol consumption, smoking and caffeine intake, remain controversial or unconfirmed. The researchers questioned 603 women aged 18-55 in the UK whose most recent pregnancy had ended in ...

Need to pull an all-nighter?

... increased and the rats fell into a sleep much like the "recovery" sleep that occurs after prolonged wakefulness. Blocking adenosine receptors with caffeine prevented this nitric-oxide-induced slumber. Rosenberg sees the most pharmaceutical promise in developing drugs that prolong wakefulness by ...

Nanoscale method for investigating living systems

... with other cells. This is how signal transduction is performed in your body, but it is also how chemicals react with your body. When, for example, caffeine enters a cell it stimulates the opening and closing of these ion channels. What we've found is that these quantum dots can form artificial pores that ...

Wisconsin researchers identify sleep gene

... sleep more in their youth than later in life, when their sleep is fragmented, as with humans. In other studies, the scientists also observed that caffeine has the same stimulating effects on human and fly sleep, and that similar genes are expressed in both species when they are awake and asleep. ...
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