Here’s how much coffee is too much

This is how many cups of coffee you should be drinking

This is how many cups of coffee you should be drinking

According to the research from the University of South Australia, drinking six or more cups of coffee a day can increase your risk of heart disease by up to 22%.

It explored the link between coffee and mortality, and included a total of 3,852,651 participants and 450,256 causes of death. They noted that drinking coffee reduced all-cause mortality or risk writing that it decreased death rates, "irrespective of age, overweight status, alcohol drinking, smoking status, and caffeine content of coffee". One small study found that regular coffee drinkers were 16% less likely to develop Alzheimer's, and another study of over 50,000 women found drinking at least one cup of Joe each week was associated with a 15% reduced risk for depression.

The researchers identified increased risks of cardiovascular disease in line with coffee consumption and genetic variations.

"As aging, obesity and lifestyle factors affect the risk of mortality, the association between coffee and mortality needs to be examined in various sub-populations by characteristics of subjects", the study explains.

The study also found that the link between coffee and mortality was stronger in Europe and Asia than in the US.

"It is hard to calculate, but my feeling is that drinking coffee possibly adds another couple of years to your life", said Astrid Nehlig of France's National Institute of Health and Medical Research in Sunday Times, explaining that part of the reason could be improved focus that a cup of brew brings.

This latest meta-analysis, published in The European Journal of Epidemiology, has similar findings.

40 studies that were conducted previously were analysed by scientists during this research.

The good news for coffee fans doesn't end there as study authors also believe that in addition to increasing life expectancy, drinking coffee also reduces the risk of developing and dying from cancer, cardiovascular disease, diabetes or respiratory disease. Another team of researchers focused on finding out how much coffee will be consumed for the health conditions to outweigh the benefits. While these studies showed positive health outcomes, some research has found coffee consumption to be linked to imbalanced blood sugar levels and weight gain.

The team used data from the UK Biobank including 347,077 participants aged 37-73 years.

A similar study on genetic variation and effects of coffee was published previous year August by authors E Loftfield and colleagues in the journal JAMA Internal Medicine titled, "Association of Coffee Drinking With Mortality by Genetic Variation in Caffeine Metabolism: Findings From the UK Biobank".

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