Tuesday November 13, 2018

Study Shows That 3 Cups of Coffee or Tea Daily May Cut Risk of Stroke

Are you an ardent coffee or tea lover, but advised to avoid caffeinated beverages due to your heart conditions Cheer up, drinking upto three cups of coffee or tea a day is safe as well as reduce irregular heartbeat and stroke risk, a study says.

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Are you an ardent coffee or tea lover, but advised to avoid caffeinated beverages due to your heart conditions Cheer up, drinking upto three cups of coffee or tea a day is safe as well as reduce irregular heartbeat and stroke risk, a study says.

A single cup of coffee contains about 95 mg of caffeine. It acts as a stimulant to the central nervous system and works to block the effects of adenosine — a chemical that causes atrial fibrillation (AFib).

AFib is the most common heart rhythm disorder, causes the heart to beat rapidly and skip beats, and if left untreated, can cause strokes.

The results suggest that caffeine intake of up to 300 mg per day may be safe for arrhythmic patients.

Jasmine Green tea and its benefits
Jasmine Green tea. Pixabay

“There is a public perception, often based on anecdotal experience, that caffeine is a common acute trigger for heart rhythm problems,” said lead author Peter Kistler, Director at Melbourne’s Alfred Hospital.

But, “caffeinated beverages such as coffee and tea have long-term anti-arrhythmic properties mediated by antioxidant effects and antagonism of adenosine,” he added.

For the review, published in the journal JACC: Clinical Electrophysiology, the team analysed multiple population-based studies.

A meta-analysis of 228,465 participants showed that AFib frequency decreasing by 6 per cent in regular coffee drinkers, and an analysis of 115,993 patients showed a 13 per cent reduced risk.

Nestle Pays Starbucks $7.1bn to Sell its Coffee.
Nestle Paid Starbucks $7.1bn to Sell its Coffee. Pixabay

Another study of 103 post-heart attack patients who received an average of 353 mg of caffeine a day showed improvement in heart rate and no significant arrhythmias — or abnormal heart rhythms, that cause the heart to beat too fast, slow or unevenly.

However, in two studies, where patients drank at least 10 cups and nine cups of coffee per day, showed an increased risk for ventricular arrhythmias (VAs) — a condition in which the lower chambers of the heart (ventricles) beat very quickly.

Also Read: 5 Health Benefits of Drinking Tea

On the other hand, patients with pre-existing heart conditions who consumed two or more energy drinks — that contains concentrated caffeine — per day reported palpitations within 24 hours. (IANS)

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Hot Coffee Has Higher Levels of Antioxidants Than Cold Coffee

And considering hot and cold brews have comparable pH levels, coffee drinkers should not consider cold brew a 'silver bullet' for avoiding gastrointestinal distress

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Hot coffee contains more antioxidants than cold coffee. Pixabay

Hot coffee has higher levels of antioxidants than cold coffee, which are believed to be responsible for some health benefits, says a new study.

The study explored that hot coffee has some measurable health benefits, including lower risk of some cancers, diabetes and depression.

For the study, researchers from Thomas Jefferson University in the US showed that hot coffee had more total titratable acids — any acid that can lose proton(s) in an acid-base reaction — which may be responsible for the hot cup’s higher antioxidant levels.

“Coffee has a lot of antioxidants. If you drink it in moderation, research shows it can be pretty good for you. We found the hot brew has more antioxidant capacity,” said Megan Fuller, an Assistant Professor from the varsity.

Costa coffee
The study explored that hot coffee has some measurable health benefits, including lower risk of some cancers, diabetes and depression. (IANS)

Results published in the journal “Scientific Reports” also found that pH levels — acidity indicator– of both hot and cold coffee were similar, ranging from 4.85 to 5.13 for all coffee samples tested.

However, coffee companies and lifestyle blogs have tended to tout cold brew coffee as being less acidic than hot coffee and thus less likely to cause heartburn or gastrointestinal problems.

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“And considering hot and cold brews have comparable pH levels, coffee drinkers should not consider cold brew a ‘silver bullet’ for avoiding gastrointestinal distress,” said Niny Rao, Associate Professor from the university. (IANS)