Everyone knows coffee is bad, right? Drinking coffee with smoking posted, discolored teeth, and short life associated travel times to miserable jobs that need a dose of caffeine to get through to. Well, maybe. There is much interesting research on how (coffee or caffeine, and they are not the same) effects on our health. Despite the misgivings of certain persons and conditions, the message is not so bad. As coffee is still the most popular beverage in theWorld, which is good news.
Review of the evidence, a cautionary tale evolved, how difficult it can be to build a good study and interpret the results. Readers must also remember that the information provides some of the who's paying for it and what you want to hear it depends. Here are a few points to note:
* A study of caffeine is not the same as a study of coffee. This is a common problem in dietary studies: In an attempt toStudy more closely, the researchers could choose to isolate a single component with a food or drink. The food itself, finally, have varying amounts of this component. However, it can extract very different results when consuming the whole food vs. a part.
* A "cup" coffee is generally assumed that 6 oz. – Not your 16 oz. Travel mug!
* Caffeine levels are generally assumed that about 100 mg per cup significantly, but in fact, vary with the type of bean, brewing –Method, and even from batch to batch. Brewed coffee, according to estimates of 100-150 mg per cup, a similar volume of espresso with about 90 mg range. Arabica beans have less caffeine than robusta beans.
Two health issues are frequently associated with coffee consumption are – their effect on blood sugar and insulin resistance and its effect on the adrenal glands. But it has also been considerable research on the consumption of coffee and the incidence of cancer,
Coffee andDiabetes mellitus
If coffee drinkers over-indulging in sweets, many notice an immediate demand for coffee. The combination of coffee and dessert is customary and traditional in many regions, such as the intake of bitter herbs (often) in the form of alcoholic beverages as a digestive aid. The desire to consume coffee with sweet flavorings may be due to the bitter taste of coffee, but it may also be some positive effect on blood sugar that causes a craving for coffee, when the blood glucoseSurge.
Some researchers suggest that derived from dieticians and coffee at the expense of blood sugar, because it stimulates (or the caffeine in it), the adrenal glands. This stimulation increases the production of hormones (adrenaline and glucagon) that cause the release of stored sugar into the blood. It is one of the options, a stimulant prepares the body for increased physical activity and higher energy.
The following is a presumption that sweetened coffee enhances this effect bySugar in the blood, both through the digestive system and by release of stored sugar by hormonal stimuli. When using it on a lack of physical exercise, the excess energy from the sugar, the pancreas responds by pumping out insulin. Insulin decreases blood sugar with a drive into the cells of the body – stored at it again. Physiologically, it was like an "upper" and a "downer" at the same time, in a convoluted attempt to stay on an evenKiel.
There are concerns that can accommodate increased demand for insulin to a decreased sensitivity to it – as in type 2 diabetes and metabolic syndrome. And it has the research indicates that caffeine (were taken to an isolated drug) inhibits the metabolism of sugar.
Show, however, a number of studies in 2006 and 2004 that coffee consumption actually associated with a decreased incidence of type 2 diabetes. Although no study has its weaknesses were, they carried outdifferent geographical areas, with different participants and different methods, and did their best to take account of confounding factors such as obesity and smoking.
Coffee, heart health and the adrenals
The adrenal glands produce various hormones that are responsible for the coordination and monitoring of a variety of physiological activities. These include cortisol, adrenaline, DHEA, estrogen and testosterone. It is feared that caffeine can cause the body to be flooded withmore adrenalin, leading to an increase in heart rate and high blood pressure. Some authors even claim that constant stimulation of the adrenal glands will eventually lead to wear them. "Although several studies have been in the stimulation by caffeine, an online search produced does not cause any study that the" wear and tear "theory addressed.
A 2002 study published in the Duke University Medical Center studied the effects of moderate doses of caffeine on blood pressure and heart rate,urinary excretion of epinephrine, norepinephrine and cortisol, and self-reported stress during normal activities. This study showed that caffeine raised average blood pressure during work and on the evening of 4 / 3 mm Hg and the increase in average heart rate by 2 bpm. Caffeine also caused a 32% increase in the levels of epinephrine (a hormone). In addition, caffeine increases the increase in blood pressure and heart rate with a higher level of stress in everyday life, combined.These effects were undiminished through the evening until bedtime. An Australian study also found that although most of the data very little about the risk of coronary heart disease among the general population to the ordinary coffee drinker, the better controlled drinking data at an increased risk in the order of 60% for those five or more cups per day . Propose
In another related area, a 2004 study linked moderate to high coffee consumption increases inflammatory markers. InflammatoryMarkers are important as predictors of coronary heart disease. Another study found, published in 2004, that the combination of caffeine and cigarette smoking reduces the flexibility of the aorta, more than any substance alone.
However, has suggested that other work is isolated in response to caffeine coffee vs minimal, especially for habitual drinkers. In 2006 a study was in the 24th April Rapid Access issue of Circulation reported. The authors concluded that "coffee consumption wasnot associated with an increased risk for coronary heart disease. "This study showed that total cholesterol, low density and high density lipoprotein-cholesterol levels in men and women coffee drinkers did not in those who drank caffeinated or decaffeinated coffee differ. CHD risk associated with coffee is not different in men with or without type 2 diabetes.
So you're off the hook? He … not so fast. A study published in 2006 in the Journal of the American Medical Association foundthat some people have a genetic mutation of the enzyme CYP1A2 that the rate they metabolize caffeine reduced. For those people who drank four or more cups per day for over a year 64% had an increased risk of heart attack, compared to less than 1% increased risk for people without a mutation. Such genetic differences between participants in a study could explain why it was hard to determine whether there is a clear link between coffee consumption and risk of heart attack.
Organdamage and cancer
This section will briefly list some research on coffee consumption and how it affects various organs and/or its association with different types of cancer.
* A study of cellular changes in the pancreas in 1986 found no changes due to coffee drinking. Most studies do not support an association between coffee consumption and pancreatic cancer.
* A study of gastric cancer conducted in Spain from 1987-1989 found no Associated with smoking or the consumption of coffee or tea.
* In a Polish study of gastric cancer, which was published in 1999 does not regularly associated with drinking coffee or tea with milk or found / cream in coffee or tea. (The results have an association with cigarette smoking, which confirmed an estimated 20% of all gastrointestinal account.)
* A 2002 study published in the European Journal of Cancer Prevention found that coffee is associatedonly weakly or not at all with bladder cancer risk, inversely associated with colon cancer risk, and inconsistently with rectal cancer risk. rectal cancer risk was not with coffee or tea.
* A Harvard Medical School review of existing literature in 2002 found no convincing evidence has been presented to show that caffeine consumption increases the risk of reproductive adversities in women.
* In 2002 an evaluation was carried out severalLifestyle factors, benign prostatic hyperplasia (prostate), the extension and the severity of benign prostatic hyperplasia (BPH). There was a strong inverse association between alcohol intake and men treated surgically for BPH or "watchful waiting" for a surgical procedure, but a positive correlation with coffee consumption. (That is, coffee seemed to make the conditions worse, alcohol has been associated with improvements.) The authors concluded that "Given the opposite effects of coffee andModerate alcohol consumption may be used together with an increased risk for clinical BPH in men with coronary heart disease, coffee constituents, which will increase the serum concentration of low-density lipoprotein cholesterol, involved in the pathophysiology of BPH. "
* The news is not good for the urinary tract. A study in the Netherlands in 2002 found that, in line with previous reviews, coffee consumption increases the risk of cancer of urinary tract infections in an approximately 20%.The consumption of tea seems not to have an increased risk of urinary tract cancer. There is also evidence that caffeine intake at a level equivalent to two or more cups of coffee every day produces increased levels of calcium in urine, which suggests a higher risk of kidney stones before (a study that looked at the coffee, but as caffeine consumption and calcium in urine) could not be found.
Coffee and bone mass
A 1991 study of 619 elderly men and women finished in Swedenthat coffee was not an additional independent risk factor for the loss of bone mass and fractures.
Conclusions
There is enough conflicting information and adoption published that individuals are supported to be inclined to pick and choose data to the response that she hoped to be. All in all, it seems that mild to moderate coffee consumption (less than four 6 oz seem. Cups a day) is not particularly bad for you. However, the consumption should be limited to those primarilysensitive (to caffeine indicating a reduced ability to metabolize) and those of the urinary tract and / or prostate health. As with so many things, moderation is appropriate in any case.
There is little doubt that coffee / caffeine is addictive, and that's never a good sign. Investigators found at the Johns Hopkins University in Baltimore, that as little as a cup of coffee a day can cause caffeine addiction. If you then try without it, you can participate in a series ofWithdrawal symptoms such as headache, fatigue and difficulty concentrating. Some may even feel as if they have the flu, with nausea and muscle pain. Simple caffeine withdrawal can explain much of the malaise associated with "cleansing diet." Thus you reduce your coffee and / or the intake of caffeine may be helpful to begin to substitute decaffeinated versions (using the products of a "Swiss" water method that does nothing chemical decaffeinated beans). Tea also seems less than aggravatingSystems of the body, and has some advantages of its own, may be worth it to switch, and only leave of coffee.