Articles tagged with Caffeine
A study found that caffeine's effects differ when consumed with or without sugar, causing varied physiological responses among individuals. The research measured heart rate and carbon dioxide production before and after consuming sugar, caffeine, or both.
Researchers found that caffeine can block cocaine's direct effects on the estrus cycle, potentially treating cocaine addiction. The study suggests a new approach to addressing sex differences in cocaine addiction.
A new study found that over 40% of energy drink exposure reports to US poison control centers involved children under 6, suffering from serious cardiac and neurological symptoms. Energy drinks contain high levels of caffeine and other ingredients that can cause these effects, particularly when mixed with alcohol.
Researchers have developed a plaster that delivers caffeine to premature babies through a membrane, providing a continuous and stable dosage for several hours. The technology uses light-sensitive materials to control the delivery rate, allowing for individualized treatment.
A large-scale genome-wide meta-analysis has identified six new genetic variants associated with habitual coffee drinking. The study suggests that people naturally modulate their coffee intake for optimal effects exerted by caffeine.
A study found that energy drink consumption increased frequency of insomnia and nervousness in athletes, contradicting claims of improved sports performance. Energy drinks contain caffeine, which stimulates athletes but does not provide additional energy.
Researchers tested the effectiveness of caffeine and music as countermeasures to driver fatigue. Caffeine was found to improve both alertness and driving performance, while music had a lesser impact on driving skills.
A new study found that caffeine therapy for apnea of prematurity does not have long-term harmful effects on sleep or control of breathing in children. The study, which assessed 201 preterm children at ages 5-12, showed no evidence of long-term detrimental effects of caffeine treatment on sleep duration or sleep apnea during childhood.
The HARVEST study found that coffee drinking increased the risk of prediabetes in patients with hypertension, particularly those who were slow caffeine metabolisers and overweight or obese. Moderate coffee consumption also heightened this risk, whereas heavy coffee drinkers only saw an increased risk if they were slow metabolizers.
A study found that energy drinks cause heart problems, including angina, cardiac arrhythmia, and sudden death. The researchers analyzed adverse events reported to the French agency for food safety between 2009 and 2012 and found that 95 of the reported events had cardiovascular symptoms.
A recent study published in the American Journal of Medicine found that higher caffeine intake is associated with a lower incidence of tinnitus in younger and middle-aged women. Researchers tracked over 65,000 women for 18 years and discovered a significant inverse association between caffeine consumption and reported tinnitus cases.
Scientists have developed a rapid, at-home test to detect low levels of caffeine in most beverages and breast milk. The enzyme-based test can pick up on caffeine concentrations as low as 1-5 parts per million, helping to prevent serious health problems.
A recent panel discussion at the Institute of Food Technologists Annual Meeting & Expo highlighted the need to identify vulnerable populations and fill research gaps related to caffeine's interactions with other energy drink ingredients. The FDA has begun an internal evaluation of caffeine's safety and is expected to issue guidelines.
Researchers are working to diminish and mask bitter tastes in foods due to genetic sensitivity issues. Food additives such as lactisole and phantom aromas can effectively reduce bitterness perception, making food more palatable.
A recent study has found that caffeine consumption by children and adolescents triggers different physiological responses in boys and girls, particularly after puberty. The study revealed significant gender differences in cardiovascular responses to caffeine, including varying effects on heart rate and blood pressure.
Scientists used caffeinated fruit flies to map genetic variations associated with resistance to insecticides. The study identified two key genes that contribute to resistance, offering insights into developing more targeted and efficient pest control strategies. By exploring the genetics of xenobiotic resistance, researchers can uncove...
A study by Nelly Jacob found that smokers have impaired bitter taste perception, with 19.8% unable to recognize the bitter taste of caffeine, compared to 13.4% non-smokers. Researchers believe tobacco's toxic effects may hinder regeneration of taste buds, leading to long-term flavor impairments.
Research suggests that drinking alcohol during early pregnancy may heighten the risk of premature birth and low birth weight, with even moderate consumption increasing the likelihood of these outcomes. Women from more affluent backgrounds were found to be more likely to drink excessively.
A new report finds energy drink consumption among teenagers may be linked with poor mental health and substance use, with nearly two thirds reporting use in the past year. Younger high school students were more likely to consume energy drinks than older ones, highlighting a trend of concern.
Researchers have discovered caffeine-based gold compounds that selectively kill human ovarian cancer cells without harming healthy cells. The new compounds target a specific DNA architecture associated with cancer, offering a potential tool in the fight against cancer.
A recent study published in Journal of Addiction Medicine found that US adolescents consuming energy drinks have higher rates of alcohol, cigarette, or drug use. The study analyzed data from nearly 22,000 secondary school students and suggested that energy drink users are more likely to report other types of substance use.
A recent study highlights the need for more attention to caffeine use disorder, which affects millions worldwide. The condition is characterized by withdrawal symptoms and difficulty reducing consumption despite other health concerns.
Researchers at Johns Hopkins University found that caffeine enhances long-term memory in humans by improving pattern separation. The study used a double-blind trial where participants received either a placebo or a 200-milligram caffeine tablet, and showed that more members of the caffeine group correctly identified new images as simil...
A recent study by researchers at the University of Birmingham found no evidence of dehydration in regular coffee drinkers who consumed moderate amounts of coffee. The study measured hydration status using various methods and found that coffee consumption contributed to daily fluid requirements, just like other fluids.
A study using cardiac MRI found that energy drink consumption increased peak strain and systolic strain rates in the left ventricle of the heart. The researchers advise caution for children and individuals with heart disease, highlighting the need for further studies on long-term effects.
A study of 27 healthy adults showed that drinking caffeinated coffee significantly improved blood flow in a finger, with a 30% increase compared to decaffeinated coffee. The researchers suggest that caffeine may help open blood vessels and reduce inflammation, providing new insights into how coffee may benefit cardiovascular health.
A new study published in the Journal of Clinical Sleep Medicine found that consuming 400mg of caffeine six hours before bedtime can significantly reduce total sleep time by over one hour. Participants remained unaware of this disruption.
A comprehensive review of caffeine dependence highlights the prevalence of addiction and suggests an agenda for future research to improve understanding and treatment options. The study emphasizes the need for continued investigation into caffeine's impact on human health, particularly in relation to mental and physical well-being.
Researchers at Duke University Medical Center found that increased caffeine intake may reduce fatty liver in people with non-alcoholic fatty liver disease. Consuming four cups of coffee or tea a day could be beneficial in preventing and protecting against the progression of NAFLD.
Researchers developed a fluorescent caffeine detector that lights up like a traffic light to indicate the amount of caffeine in drinks. The sensor can help prevent caffeine overdoses and is useful for detecting pollution in natural water systems.
Researchers investigated whether caffeine affects cognitive performance in children and teens, finding sex differences in responses to caffeine on certain tasks. Additionally, a study on food pairing found that consuming caffeinated beverages with flavored foods increased preference for those foods.
Researchers at the University of Alberta have identified genes responsible for DNA repair and cell division in cancer cells, which can be targeted by caffeine. The study used fruit flies with a mutant gene to find new ways to exploit caffeine's lethal effects on cancer cells.
Researchers genetically engineered E. coli bacteria to metabolize caffeine, enabling its use for decontamination of wastewater and production of medications for asthma. This breakthrough could also lead to the development of a sensor to measure caffeine levels in beverages.
Research shows energy drinks containing caffeine can enhance physical performance in cyclists, with average cycling times improving by 3% after consumption. However, the impact on cognitive function is unclear and likely unrelated to the energy drink.
Research suggests that moderate coffee and tea consumption during pregnancy may be associated with lower birth weights, which can lead to health complications in the long term. The study, conducted on 59,000 pregnant women, found a correlation between caffeine intake and small for gestational age (SGA) babies.
Scientists have shown that caffeine enhances a honeybee's memory of floral traits, allowing them to remember flowers better. This discovery could lead to improved pollination and plant recruitment.
A large study found that as coffee drinking increased, the risk of death decreased in older adults. The study's author discusses potential links between coffee consumption, caffeine intake, and various causes of disease.
Research published in BMC Medicine found that caffeine from all sources reduces birth weight and increases pregnancy length by 5 hours per day. Caffeine intake from coffee was associated with an even longer gestational length, increasing risk of small for gestational age at birth by almost a third
Researchers used PET scans to visualize the effect of caffeine on brain adenosine receptors for the first time. The study found that up to 50% of A1 adenosine receptors were occupied by caffeine in regular coffee drinkers, suggesting a potential link to neurodegenerative diseases.
A new study found that compounds in the arcea nut can directly cause DNA damage and increase the risk of oral cancer in betel quid users. The substances, present in amounts sufficient to cause harm, were discovered through research published in Chemical Research in Toxicology.
A University of Illinois study found that caffeine reduces brain-based inflammation associated with neurodegenerative diseases. Caffeine-treated mice recovered their ability to form new memories faster than non-caffeine-treated mice, suggesting a possible therapeutic target for mild cognitive impairment.
Research by the European Society of Cardiology found that energy drinks improve left and right ventricular function in healthy subjects. Energy drink consumption increases diastolic blood pressure but also shows benefits for heart rate and overall cardiac performance.
Scientists have found proof of a caffeinated brew made from the leaves of a holly tree, dating back 700-900 years to the Cahokia settlement. This 'black drink' was used in rituals and was part of a broader cultural and trade network in North America.
A study found that caffeine supplements improved Parkinson's severity ratings and speed of movement by 3 points, but did not affect daytime sleepiness or quality of life. The results suggest that caffeine may be a useful treatment option for some patients with Parkinson's disease.
A study at McGill University Health Centre found that caffeine improved motor symptoms in people with Parkinson's disease by increasing speed of movement and reducing stiffness. Larger-scale studies are needed to confirm these findings and explore caffeine as a treatment option.
A study from the University at Buffalo's Research Institute on Addictions found a link between consuming caffeinated energy drinks mixed with alcohol and having casual -- often risky -- sex among college-age adults. The study suggests that mixing energy drinks with alcohol can lead to unintentional overdrinking, increasing the risk of ...
A new PSU study found elevated levels of caffeine in Oregon coastal waters, contradicting initial expectations. The research indicates that wastewater treatment plants are effective in removing caffeine, but severe weather events can flush contaminants out to sea.
A new study found that caffeine continues to enhance muscle performance in younger muscles but is less effective in older muscles. Researchers suggest that preserving muscle tone through physical activity could be key to maintaining health and functional capacity in the aging population.
A recent study found that moderate coffee consumption can appreciably reduce the risk of Alzheimer's disease and delay its onset. Higher blood caffeine levels were associated with a reduced risk of dementia or delayed onset, suggesting that coffee may be a protective factor against Alzheimer's.
A recent study found that caffeine can significantly increase tear production in people with dry eye syndrome. The research suggests that individuals who are sensitive to caffeine may benefit from using it as a treatment option, under the guidance of a healthcare professional.
A team of scientists has created a new method to determine whether caffeine in beverages is naturally occurring or synthetic. Using stable-isotope analysis, the technique identifies differences in carbon isotopes found in plant-based and lab-made caffeine. This breakthrough enables faster categorization of caffeine sources.
Researchers discovered that exercise alters DNA molecules within muscles, leading to improved strength and metabolism. The study also found that caffeine can mimic this effect, suggesting a potential alternative to traditional exercise for some individuals.
Breastfeeding mothers may accumulate caffeine in their bodies and pass it to their babies, causing symptoms like wakefulness and irritability. A safe level of caffeine intake while breastfeeding is unclear, but experts recommend moderation.
A new software app, Caffeine Zone, developed by Penn State researchers, can help people find the best time to consume caffeine for a mental boost without disrupting their sleep. The app provides personalized graphs based on individual caffeine intake and drinking habits.
A new NIH study found that moderate caffeine intake is associated with higher estrogen levels in Asian women and lower estrogen levels in white women. Caffeine consumption from caffeinated soda or green tea also linked to elevated estrogen levels in all ethnic groups, but without affecting ovulation.
A roundtable discussion published in Journal of Caffeine Research explores whether caffeine enhances athletic performance, with experts noting mixed study data and various factors affecting its impact. The journal also covers a wide range of effects on human health, including mood disorders and cardiovascular disease.
A study by Prof. Sébastien Sauvé and colleagues has discovered a strong correlation between the levels of caffeine in water and the level of bacteria, making caffeine a useful indicator of pollution due to sewerage systems.
A study found that individual differences in response to caffeine may predict how people respond to other stimulant drugs, including amphetamine and cocaine. Caffeine 'Choosers' reported more positive effects of d-amphetamine compared to 'Nonchoosers'.
A study of over 50,000 women found that those consuming two to three cups of caffeinated coffee per day had a 15% decrease in relative risk for depression, while those consuming four cups or more had a 20% decrease. Higher caffeine intake was linked to greater protection against depression.
A new Rutgers study found that applying caffeine directly to the skin may help prevent damaging UV light from causing skin cancer. The study, which involved genetically modifying mice with diminished ATR enzyme, showed that the modified mice developed fewer tumors and had reduced risk of invasive tumors compared to unmodified mice.