All articles tagged with #caffeine
The parents of 17-year-old Larissa Rodriguez filed a wrongful-death lawsuit against Glazer's Beer and Beverage, alleging Alani Nu energy drinks contributed to her fatal cardiomyopathy from excessive caffeine, citing inadequate warnings on the cans and marketing aimed at youth; they seek $1 million in damages and expect additional defendants.
The family of 17-year-old Larissa Rodriguez filed a wrongful-death lawsuit in Hidalgo County, Texas, alleging her death was caused by an enlarged heart due to excessive caffeine from Alani Nu energy drinks and accusing the distributor of inadequate warnings; the suit seeks more than $1 million and notes the drink contains 200 mg of caffeine per 12-ounce can, with marketing to youths cited as a concern, while Celsius owns Alani Nu and additional defendants may be added as the case proceeds.
Researchers in Singapore found that caffeine can both prevent and reverse social-memory deficits caused by sleep deprivation in mice, by acting on the CA2 region of the hippocampus and dampening adenosine signaling. Regular caffeine exposure before sleep loss preserved social recognition, and applying caffeine to brain tissue from sleep-deprived mice improved CA2 signaling. While the results illuminate a mechanism linking sleep, memory, and caffeine, they are in mice and must be tested in humans to assess relevance for dementia risk and cognitive health.
A study of 85 Bahamian sharks across five species found caffeine in 28 individuals, plus two with painkillers and one with cocaine, suggesting contaminants from urbanization and tourism that could affect shark health and behavior; more research is needed to understand the full impact.
A Bahamas study of 85 sharks around Eleuthera found drugs in 28 individuals: caffeine was most common, with two sharks testing positive for cocaine and others for acetaminophen and diclofenac, suggesting pollution from wastewater and tourism; researchers warn of potential increased stress and detoxification energy use, and call for better wastewater management and more research on ecological impacts.
A 43-year study of 131,821 healthcare professionals (Nurses’ Health Study and Health Professionals Follow-Up Study) found that regular caffeinated coffee intake (2–3 cups daily) or tea (1–2 cups daily) was associated with about an 18% lower risk of developing dementia versus those who rarely or never drank them. Decaf coffee did not confer the same benefit. The analysis included 11,033 dementia cases and showed similar patterns across genetic risk groups, but as an observational study it cannot establish causation, calling for further research into the mechanisms behind caffeine’s brain health effects.
UTEP researchers report that caffeine consumed at night increases impulsive behavior in fruit flies, especially in females, while daytime caffeine has no similar effect; the study, published in iScience, suggests a time-of-day modulation of caffeine’s impact on behavioral control with potential implications for night-shift workers.
Eight hours in bed isn’t always enough if your sleep cycles are repeatedly interrupted. A sleep doctor says sleep quality and regularity matter more than total hours: most adults cycle through 4–6 ~90-minute stages nightly, so a consistent bedtime and wake time, plus a cool bedroom (about 65–68°F), limited caffeine after lunch, and short naps can improve how rested you feel in the morning.
A large cohort study of 461,586 adults followed for a median of 13.4 years found a J-shaped relationship between coffee consumption and mood/stress disorders: two to three cups per day were linked to the lowest risk of anxiety and depression, while five or more cups were associated with higher risk. The pattern held across ground, instant, and decaf coffee and was more pronounced in men. Because the study is observational, it cannot prove causality, and genetic caffeine metabolism did not significantly alter the associations; researchers suggest bioactive coffee compounds may help calm brain circuits related to mood and stress.
Coffee’s mix of caffeine and polyphenols may support brain health, reduce inflammation, and lower risks for age-related diseases like dementia, cancer, and diabetes. Benefits appear strongest with 1–3 cups per day of black coffee, consumed earlier in the day, while excessive caffeine (>~400 mg/day) can cause jitters or sleep issues. Decaf may offer fewer benefits, and sugary or milky additives can dampen the health effects.
A 43-year cohort of 131,821 NHS and HPFS participants found that moderate caffeinated coffee (2–3 cups/day) or tea (1–2 cups/day) was linked to an 18% lower dementia risk and better cognitive performance, with decaffeinated coffee showing no similar benefit and effects observed across varying genetic risk; caffeine is suspected to play a key role and the benefits were strongest at the cited intake levels.
Paraxanthine, the body’s primary byproduct when caffeine is metabolized, is being added directly to some coffees and energy drinks as a potential caffeine substitute. Brands promise steadier, “clean” energy with fewer jitters, but evidence is limited to small studies and long‑term human data are scarce. Regulators in Europe are evaluating paraxanthine as a novel food, and many products deliver about 200–300 mg per serving, raising questions about total daily stimulant intake. While early research hints paraxanthine could match or even exceed caffeine for certain cognitive benefits, it is not yet proven to be safer or more effective, so cautious use—lower doses, avoiding late-day consumption, and protecting sleep—is advised until more data emerge. Trials underway should help translate lab findings into everyday use.
Five tricks to hasten OTC pain relief: choose faster-acting formulations (liquid-filled gels or dissolvables, or crush/IV under supervision); absorption is quicker on an empty stomach (with caution for stomach issues); drink water to help dissolution, and coffee's caffeine may boost absorption; plus, lying on the right side can speed delivery to the small intestine—though those with liver/kidney disease, ulcers, or heart issues should use pain relievers with care.
A 43-year prospective study of 131,821 NHS and HPFS participants found that moderate caffeinated coffee (2–3 cups/day) or tea (1–2 cups/day) was associated with a lower risk of dementia, slower cognitive decline, and better cognitive performance; decaffeinated coffee did not show the same benefit. The strongest cognitive benefits appeared within these intake ranges, and results were similar across genetic risk levels, suggesting caffeine may play a key role, though the study shows association, not causation, and other lifestyle factors also matter.
An analysis of 461,586 UK adults followed for about 13 years shows a non-linear link between coffee and mental health: two to three daily cups are linked with the lowest risk of mood and stress disorders, while more than five cups erode benefits; heavy ground coffee in particular shows downside. Instant and ground coffee follow the same pattern; decaf has no clear effect. The protective link is stronger in men, and the metabolism genotype did not alter the pattern. Inflammation and kidney function markers partly explain the effect, but as an observational study it cannot prove causation.