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.

Vegetables and dairy may lower endometriosis risk

A major umbrella review shows that higher intake of vegetables and dairy products is linked to a lower risk of endometriosis, while butter and high caffeine intake appear to increase risk. However, the evidence remains weak due to limitations in existing observational studies.

30 Jun 2025

Coffee’s hidden compounds could help fight type 2 diabetes

A comprehensive review of nearly 150 studies reveals that coffee polyphenols may help regulate blood sugar and reduce inflammation linked to type 2 diabetes. However, most evidence comes from preclinical research, and robust clinical trials are needed to confirm benefits.

29 Jun 2025

OU researchers launch innovative study to track e-cigarette habits in young adults

Electronic cigarettes, or vapes, are widely used and available in hundreds of different types and flavors, yet researchers lack information about the everyday e-cigarette habits of young adults.

18 Jun 2025

Black tea helps in one Parkinson’s type, but soda and pesticides worsen another

A large longitudinal study found that pesticide exposure and caffeinated soda intake were linked to more severe motor symptoms in idiopathic Parkinson’s disease (iPD). In contrast, black tea consumption was associated with milder symptoms in patients with LRRK2-related Parkinson’s disease (LRRK2-PD).

16 Jun 2025

New hypothesis links caffeine to lower risk of sudden infant death syndrome

After decades of stalled national progress in reducing the rate of Sudden Unexpected Infant Death (SUID), a category of infant mortality that includes sudden infant death syndrome (SIDS), researchers at Rutgers Health have proposed an unexpected solution: Caffeine might protect babies by preventing dangerous drops in oxygen that may trigger deaths.

11 Jun 2025

Morning coffee helps women stay sharp and strong as they age

Findings from a new study of almost 50,000 women followed for 30 years suggest that a morning cup of coffee might do more than boost energy; it could also help women stay sharp, strong and mentally well as they age.

2 Jun 2025

Expert review reveals how to fuel triathletes for optimal results

This systematic review synthesizes evidence from 35 studies to guide optimal nutrition, supplementation, and recovery for triathletes. The findings highlight the critical importance of glycogen balance, hydration, targeted supplementation, and ongoing education—especially for female athletes at risk of energy deficiency.

2 Jun 2025

Study sheds new light on how caffeine can impair sleep and memory recovery

Caffeine is not only found in coffee, but also in tea, chocolate, energy drinks and many soft drinks, making it one of the most widely consumed psychoactive substances in the world.

28 May 2025

How urine caffeine levels may help detect diabetic eye damage early

Researchers found that higher urinary levels of caffeine and specific metabolites, especially in men, were significantly associated with diabetic retinopathy risk. The cross-sectional study used NHANES 2009–2014 data and highlights potential biomarkers for early detection in diabetic populations.

7 May 2025

Black coffee improves insulin sensitivity in women, study finds

Two daily cups of coffee, especially black, are linked to lower insulin resistance and fasting insulin levels in Korean women, suggesting coffee may improve glucose metabolism. The effect was not observed with coffee containing sugar or cream.

4 May 2025

Caffeine increases brain complexity during sleep and shifts it toward a critical state

Caffeine shifts brain activity during sleep by increasing EEG complexity and reducing long-range temporal correlations, particularly in non-REM (NREM) sleep. These changes reflect a movement toward a “critical regime” of neural processing, more pronounced in younger adults.

1 May 2025

Could your milk choice affect migraines?

Skim milk consumption is linked to a lower prevalence of migraines in U.S. adults, according to a large NHANES-based study. The association remained significant even after adjusting for lifestyle, diet, and demographic factors.

9 Apr 2025

Gut bacteria and blood metabolites directly affect children’s height, study finds

Researchers used Mendelian randomization to uncover causal links between gut microbiota, blood metabolites, and short stature in children.

7 Apr 2025

Defibrillators and CPR cut marathon cardiac deaths in half, study shows

Researchers found that while the rate of cardiac arrests during U.S. marathons and half-marathons remained stable from 2010 to 2023, the likelihood of death from these events dropped by nearly half—thanks to faster emergency response and widespread use of defibrillators.

31 Mar 2025

Caffeine and beetroot juice beat fatigue in repeated high-intensity runs

Caffeine combined with beetroot juice significantly improves both initial and repeated 1000-meter running performance in non-athlete men. Body fat percentage, sleep duration, and nutrition emerge as key factors influencing endurance outcomes.

30 Mar 2025

Inflammation found to impact telomere length more than diet or exercise

A new research paper was published in Aging (Aging-US) on January 29, 2025, in Volume 17, Issue 2, titled "Diet, lifestyle and telomere length: using Copula Graphical Models on NHANES data."

26 Mar 2025

Natural compounds identified as potential inhibitors of SARS-CoV-2 spike protein

The COVID-19 pandemic highlighted the urgent need for effective therapeutic agents against SARS-CoV-2.

20 Mar 2025

Increased intake of fruit, fiber, dairy and caffeine linked to lower tinnitus risk

Increased consumption of fruit, dietary fiber, dairy products and caffeine may be associated with a reduced risk of tinnitus (ringing in the ears), suggests an analysis of the available evidence, published in the open access journal BMJ Open.

18 Mar 2025

Could tea during pregnancy give your baby a brain boost? Research says yes

Maternal tea consumption during pregnancy – particularly in the second and third trimesters – is associated with improved cognitive, fine motor, and gross motor skills in 3-year-olds, while coffee intake shows no significant impact, according to a Chinese cohort study of 1,423 mother-child pairs.

18 Mar 2025

Lack of sleep and insomnia may raise teenagers’ risk for hypertension

Teenagers who do not get the recommended amount of sleep may be at an increased risk for high blood pressure, according to preliminary research presented at the American Heart Association's Epidemiology, Prevention, Lifestyle & Cardiometabolic Health Scientific Sessions 2025.

6 Mar 2025