Drinking coffee significantly improves blood flow, study finds
Wednesday 20 November 2013
Coffee may perk up the blood vessels due to the effects of caffeine, a study suggests.
Researchers found that drinking a cup of caffeinated coffee significantly improved blood flow in the fingers of 27 healthy adults.
Measuring blood flow in the finger provides an indication of how well the body's smaller blood vessels are functioning.
Comparing normal-strength coffee with decaf, the caffeinated version increased blood flow by 30% over a 75-minute period.
Professor Masato Tsutsui, a heart expert from the University of the Ryukyus in Okinawa, Japan, said: "This gives us a clue about how coffee may help improve cardiovascular health."
He presented the findings at the American Heart Association's Scientific Sessions meeting in Dallas, Texas.
The study participants were all people aged from 22 to 30 who did not regularly drink coffee.
A laser technique was used to study blood circulation in the finger on a microscopic level non-invasively.
Volunteers were randomly assigned to drink caffeinated or decaffeinated coffee without knowing what they had been given. Two days later, each group had its coffee allocation swapped and the study was repeated.
Caffeinated coffee caused a slight increase in blood pressure and improved the functioning of cells lining blood vessel walls, the researchers found.
The study was part-funded by the All Japan Coffee Association.
Life & Style blogs
The Swedes are adding a gender-neutral pronoun to their dictionary
Astrological signs are almost all wrong, as movement of moon and sun throws out zodiac
PTSD photo series documents what the disorder is really like – as study reveals suicides of 22 US veterans every day
The distress of some Zayn Malik fans is real, and they need support, say experts
Eating quinoa and whole grains every day could help you live longer
- 1 Finland schools: Subjects scrapped and replaced with 'topics' as country reforms its education system
- 2 The West has it totally wrong on Lee Kuan Yew
- 3 #FreeTheNipple: Women in Iceland bare breasts in solidarity with trolled student
- 4 Scientists have discovered a simple way to cook rice that dramatically cuts the calories
- 5 Zayn Malik quits One Direction: Hundreds of workers request compassionate leave following band member's exit
£12000 - £24000 per annum: Recruitment Genius: A opportunity has arisen for a ...
£32000 - £38000 per annum: Ashdown Group: A successful accountancy practice in...
£18000 - £23000 per annum + Uncapped commission: SThree: Does earning a 6 figu...
£18000 - £25000 per annum: Recruitment Genius: This is an exciting opportunity...