Caffeine News and Research

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Caffeine is a bitter substance found in coffee, tea, soft drinks, chocolate, some nuts and certain medicines. It has many effects on the body's metabolism, including stimulating the central nervous system. This can make you more alert and give you a boost of energy.

One cup of coffee a day could keep atrial fibrillation from coming back

A multicenter randomized clinical trial found that moderate caffeinated coffee intake after cardioversion significantly lowered the recurrence of atrial fibrillation or flutter compared with abstinence. The findings challenge long-standing advice to avoid coffee in cardiac arrhythmia patients and support its safety at typical consumption levels.

10 Nov 2025

Children's oral health remain very poor despite improvements from government interventions

Children's access to NHS dentists and rates of tooth decay remain very poor despite improvements from national government interventions, oral health experts say.

10 Nov 2025

Drinking coffee can protect against atrial fibrillation

Drinking coffee can protect against atrial fibrillation (A-Fib), a common heart rhythm disorder that causes rapid, irregular heartbeat and can lead to stroke and heart failure.

10 Nov 2025

Social media spreads both awareness and misinformation about allergies and asthma

From rare tick-borne meat allergy to everyday asthma, millions of people turn to social media for health advice.

6 Nov 2025

Why health education isn’t stopping young adults from consuming energy drinks

Polish students' energy drink consumption persists despite awareness of health risks, indicating a need for enhanced education and stricter sales regulations.

6 Nov 2025

How branding and peer pressure keep kids hooked on energy drinks

Children and adolescents in North East England still find energy drinks easy to access despite a voluntary UK ban, drawn by taste, price, and powerful marketing. Hydration drinks like PRIME are viewed as “healthier,” even though young consumers often misunderstand their ingredients and health impacts.

28 Oct 2025

Daytime sleepiness in older adults linked to cognitive decline after surgery

People 60 and older who are excessively sleepy during the day may have more problems with memory and thinking after surgery, suggests a study presented at the ANESTHESIOLOGY 2025 annual meeting.

13 Oct 2025

New mothers more likely to experience severe pain and sleep problems after C-section

New mothers are more likely to experience severe pain that disrupts sleep and activities of daily living, as well as develop sleep disorders, if they give birth by cesarean delivery (C-section), suggests research presented at the ANESTHESIOLOGY 2025 annual meeting.

12 Oct 2025

How much caffeine is safe during pregnancy? New review finds no clear threshold

Caffeine's impact on pregnancy is nuanced; moderate consumption may not lead to major complications, but risks to fetal growth persist without a safe threshold.

10 Oct 2025

Personalized chatbot feedback encourages teens to drink less sugar

Researchers investigate how teenagers respond to a personalized chatbot intervention designed to reduce their sugar intake.

10 Oct 2025

Caffeine boosts muscular power and speed in resistance training

This meta-analysis highlights caffeine's role in enhancing resistance training performance, with notable effects on power and velocity for low-caffeine users.

9 Oct 2025

Fermented soy boosts memory in older adults

Findings from a study reveal that fermented soy may boost memory function in older adults, especially postmenopausal women, offering dietary cognitive support.

9 Oct 2025

Drinking less water daily spikes your stress hormone

Findings indicate that low hydration is associated with increased cortisol spikes during stress, potentially influencing long-term health risks.

26 Sep 2025

Calcium-induced release identified as key driver of dangerous muscle disorders

Researchers engineered mice with a mutation (E3896A) in the RyR1 calcium-binding site, eliminating calcium-induced calcium release (CICR) without affecting depolarization-induced calcium release.

25 Sep 2025

Study finds 7 to 8 cups a day of coffee, tea, and water tied to longer life

Researchers using UK Biobank data found that drinking 7–8 cups of coffee, tea, and water per day was linked to the lowest mortality risk. The healthiest mix was a 2:3 balance of coffee to tea, with further benefits over water substitution, but excessive intake (>9 cups) raised cardiovascular risk.

24 Sep 2025

Coffee protects the liver by blocking inflammation and scarring, review finds

A new review in Biochemical Pharmacology synthesizes decades of research showing consistent links between regular coffee consumption and reduced risk of liver disease, including cirrhosis and liver cancer. Coffee’s bioactive compounds act on antioxidant, anti-inflammatory, antifibrotic, and metabolic pathways to slow liver damage progression.

21 Sep 2025

Research reveals undisclosed active ingredients in retail mushroom products

"Magic mushroom" edibles sold at smoke shops and convenience stores are likely to contain no psilocybin but instead a range of undisclosed active ingredients, a study led by an Oregon State University College of Pharmacy scientist shows.

13 Sep 2025

Too much caffeine may worsen stress for students hooked on studying

Findings suggest that caffeine intake can worsen anxiety and depression in students, emphasizing the need for balanced consumption and mental health support.

5 Sep 2025

Mediterranean diet lowers dementia risk by altering key metabolites

Researchers linked genetics, plasma metabolites, and Mediterranean diet adherence to dementia risk in two large US cohorts, showing APOE4 homozygotes had distinct metabolic pathways. Diet-related metabolites mediated protection, highlighting precision-prevention opportunities.

26 Aug 2025

Review finds coffee linked to longer life and lower disease risk

A new review highlights that coffee consumption is consistently linked to reduced risks of death, cardiovascular disease, diabetes, and some cancers, while also supporting mental and physical well-being. It also cautions on intake during pregnancy and when sugar or cream are added.

19 Aug 2025