The latest study published in the British Journal of Nutrition It indicates that consumption of seven to eight daily drinks, particularly a balanced mixture of coffee and tea, is associated with lower mortality. Total optimal fluid intake is related to the significant decrease in deaths due to various causes, including respiratory and digestive diseases.
However, it should be noted that consuming coffee or tea separately is not so strongly associated with a reduction in mortality as its combined consumption.
Specifically, a balanced combination of coffee and tea, in an approximate proportion of 2: 3, was related to the least risk of death for all causes and for several specific diseases, appointment Medical news.
Perfect mix
The study reveals that, compared to other consumption patterns, this mixture can reduce the risk of death due to respiratory diseases by 72% and digestive diseases in 65%.
Recall that, in addition to water, an essential component of life, coffee and tea are two of the most popular drinks in the world, consumed by their flavor and the benefits of their bioactives.
However, given the broad scope and growing depth of this research, its interpretation remains complex, especially for public health authorities and consumers concerned about their health. Methodological inconsistencies further complicate results and interpretations, since most studies compare different levels of coffee or tea consumption without properly taking into account what these drinks replace (alternative fluid intake).
Recommendations for consumers
Based on this study, consumers are recommended to prioritize total consumption of 7 to 8 daily drinks, favoring water replacement with coffee and tea.
In spite of this, the researchers warn against an excess of intake, since more than nine drinks per day can increase the risk of cardiovascular mortality.
About the study
Research used data from BIOBANCO OF THE UNITED KINGDOMan extensive study of population cohort that represents national health. The participants were eligible if they had completed at least one 24 -hour dietary reminder, with exclusions due to implausible energy intake, lack of data on drinks or biobonco withdrawal. In total, 182,770 adults were included.
Data collection was made through multiple 24 -hour reminders between 2009 and 2012. Interest data included sociodemographic factors (eg, age, sex, ethnicity), medical history (eg, metabolic syndrome) and detailed dietary information. The study results, measured for approximately 13.3 years of monitoring, included mortality incidents, as well as specific causes of mortality.
They specify that a multivariate model of COX was used within a framework of compositional data analysis to analyze the relative consumption of coffee, tea and natural water. This allowed to simultaneously evaluate both the effect of the total volume of these three drinks consumed per day and the impact of the proportion between them. The models adjusted to consider possible confusion factors, such as demographic data, lifestyle factors and pre -existing conditions.
Study conclusions
The findings suggest that the daily intake of between seven and eight liquids, especially combining coffee and tea, can have significant protective effects on health.
Even so, research warns that these results are observational and should be interpreted cautiously, since they do not establish direct causality.
Consumers are urged to achieve proper consumption of liquids and to consider the balanced mixture of coffee and tea to optimize potential health benefits.
Risks associated with excessive coffee and tea consumption
There are specific risks associated with excessive consumption of coffee and tea, mainly related to caffeine and other compounds that both drinks contain.
Risks of excessive coffee consumption
- Excess coffee can cause insomnia, especially if consumed in the afternoon or night, since its effect can last up to five or six hours after ingesting.
- It can cause gastrointestinal problems such as acidity, ardor, nausea, vomiting or diarrhea due to its laxative effect.
- Excess caffeine can increase stress, anxiety, tremors, tachycardia and even cause panic attacks. It can also increase the frequency and urinary urgency.
- In some people, it can contribute to an indirectly weight gain of additives such as sugar, milk or cream.
- Studies suggest that consuming two or more daily cups of coffee can increase the risk of lung cancer, not by caffeine itself, but by components released in the roasted process, especially in the torrefact or mixture coffee.
- In women, a very high consumption can be associated with lower bone density, although this can be mitigated with a good calcium intake.
- Excessive consumption can lead to dependence and withdrawal syndrome if it is interrupted sharply.
Risks of excessive tea consumption
- The consumption of two or more daily tea cups has also been associated in some studies with an increase in the risk of lung cancer, similar to coffee.
- By containing caffeine, excess tea can cause symptoms similar to coffee, such as anxiety, insomnia, palpitations and stomach discomfort.
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