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.

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

Sweetened tea doesn’t offer the same health benefits

Unsweetened tea is associated with reduced mortality risk, while sugar-sweetened varieties show no significant health benefits, according to recent studies.

7 Aug 2025

Does your morning coffee or tea really boost your mood? Here’s what science says

Caffeine consumption is linked to increased positive mood in daily life, especially within 2.5 hours after waking. This effect is influenced by tiredness and social context, with no consistent impact on negative emotions.

6 Aug 2025

Nighttime caffeine linked to increased impulsivity

Do you find yourself reaching for a cup of coffee at night to stay alert? A new study from The University of Texas at El Paso suggests you might want to reconsider.

5 Aug 2025

Moderate coffee and tea habits linked to sharper thinking in seniors

Moderate coffee intake and both moderate and high tea consumption are associated with a slower decline in fluid intelligence among older adults over nearly a decade. High coffee intake, however, is linked to a faster decline in cognitive function.

28 Jul 2025

Everyday diet ingredients like caffeine can affect bacterial antibiotic resistance

Ingredients of our daily diet - including caffeine - can influence the resistance of bacteria to antibiotics. This has been shown in a new study by a team of researchers at the Universities of Tübingen and Würzburg led by Professor Ana Rita Brochado.

23 Jul 2025

Could serotonin supplements become the next hair loss treatment?

Researchers have shown that serotonin directly stimulates dermal papilla cells and promotes hair growth in lab-grown hair follicloids and human hair follicles. The findings suggest serotonin and related compounds could offer new avenues for treating hair loss, though safety and dosing challenges remain.

9 Jul 2025

New study finds UK mums-to-be miss out on key nutrients

A new British Nutrition Foundation review finds that most UK women of reproductive age fall short of key nutrients before and during pregnancy, with teens and low-income groups most affected. The paper urges targeted, consistent guidance and greater support for healthy weight, supplementation, and plant-based diets.

7 Jul 2025

Why young athletes should think twice before using supplements

Most supplement claims for young athletes are based on adult studies, posing risks. Tailored nutrition is crucial for their growth and athletic performance.

3 Jul 2025