Anxiety and sleep changes
Many coffee drinkers are familiar with "coffee jitters", a nervous condition that occurs when one has had too much caffeine. It can also cause anxiety and irritability, in some with excessive coffee consumption, and some as a withdrawal symptom. Coffee can also cause insomnia in some. In others it can cause narcolepsy.
Cosmetic & Cholesterol
A
2007 study shows the Baylor College of Medicine, the diterpene
molecules cafestol and kahweol, found only in coffee, presumably
increasing the low-density lipoprotein, or LDL in humans. This increase in LDL level is an indicator that the coffee-cholesterol increased. The Baylor study serves to link cafestol and kahweol with higher cholesterol in the body.
Filter paper has a property that lipid compounds that can bind to most cafestol and kahweol remove the coffee. Remove brew methods can not miss with an air filter, such as using a press pot, cafestol and kahweol from the final brewed product. In contrast, drip brewing with a paper filter removes most of the cafestol and kahweol from coffee.
Blood pressure
Caffeine has previously been in increasing the risk of high blood pressure in combination, but recent studies have confirmed any association. In a 12-year study of 155 000 nurses, no large amounts of coffee does not lead to a "risky rise in blood pressure." [43] Earlier studies had shown no statistically significant association between coffee drinking and clinical hypertension. The effect of coffee on morbidity and mortality due to the effect on blood pressure is too weak and has not been studied. Other positive and negative effects of coffee on health would be difficult confounding factors.
Effects on pregnancy
A Danish study of 18,478 women in February 2003 a high consumption of coffee during pregnancy to significantly increased risk of stillborn children (but not significantly increased risk of infant mortality in the first year). "The results seem to be a threshold effect around four to seven cups give a day," says the study. Those eight or more cups per day (64 U.S. fluid ounces or 1.89 liters) of drinking 220% increased risk compared with nondrinkers. This research is not repeated, but has caused some doctors warn against excessive consumption of coffee during pregnancy.
Decaffeinated coffee is also available as a potential health risk for pregnant women with chemical solvents, considered the caffeine instead of other less invasive procedures to unpack. The effects of these substances, however, the solvents in question evaporate at 80-90 ° C and decaffeinated coffee beans for roasting, which at about 200 ° C. As such, these substances, namely trichloroethane and methylene chloride traces available at most, and should not pose a significant risk, embryos and fetuses.
Iron deficiency Anaemia
The consumption of coffee can lead to anemia in mothers and infants.Coffee iron interferes with the absorption of carbohydrates.
Coronary heart disease
A 2004 study attempted why the positive and negative effects of coffee conflict to discover. The study found that consumption of coffee, with a significant increase in biochemical markers of inflammation. This is a harmful effect of coffee on the cardiovascular system, which may explain why coffee has so far only to the heart at a level of four cups (24 fluid ounces or 600 ml) or less per day can help.
The health risks of decaffeinated coffee have been studied, with mixed results. A variable is, the type of decaffeination process, while other with the use of organic solvents, which leave residues, while others depend steam.
A study has shown that cafestol, a substance that is cooked in coffee drinks, dramatically increases cholesterol levels, especially in women. Filter coffee contains only trace amounts of cafestol.
Polymorphisms of the CYP1A2 gene may lead to a slower metabolism of caffeine. In patients with a slow release of the enzyme the risk of myocardial infarction (heart attack) is increased by one third (2-3 cups) by two-thirds (> 4 cups). The risk was more pronounced in people under the age of 59.
A Harvard study of more than 20 years, 128 000 people executed in 2006, the conclusion that there is no evidence for the claim that coffee consumption reduce the risk of heart disease to support. The study does show a correlation between heavy consumption of coffee and a higher degree of exposure to other cardiovascular risk factors such as smoking, high alcohol consumption and lack of exercise exercise.The results apply only to paper coffee filters, including the cooked coffee and espresso, for example. In addition, the principal investigator of the study confirmed that subsets of the larger group, the risk of heart attack if they drink a few cups of coffee per day due to genetic differences in the metabolism of caffeine.
The Iowa Women's Health Study showed that women who consumed coffee less cardiovascular events and actually lower cancer rates than the general population did. For women who drank six or more cups, the benefit was even greater. But in this study, 35% of the original participants who have already ruled out heart disease and other chronic diseases, when the study began. Because the participants were all older than 55 years, can not be a good indication of the long-term effects of coffee consumption on heart disease can be drawn from this study.
Filter paper has a property that lipid compounds that can bind to most cafestol and kahweol remove the coffee. Remove brew methods can not miss with an air filter, such as using a press pot, cafestol and kahweol from the final brewed product. In contrast, drip brewing with a paper filter removes most of the cafestol and kahweol from coffee.
Blood pressure
Caffeine has previously been in increasing the risk of high blood pressure in combination, but recent studies have confirmed any association. In a 12-year study of 155 000 nurses, no large amounts of coffee does not lead to a "risky rise in blood pressure." [43] Earlier studies had shown no statistically significant association between coffee drinking and clinical hypertension. The effect of coffee on morbidity and mortality due to the effect on blood pressure is too weak and has not been studied. Other positive and negative effects of coffee on health would be difficult confounding factors.
Effects on pregnancy
A Danish study of 18,478 women in February 2003 a high consumption of coffee during pregnancy to significantly increased risk of stillborn children (but not significantly increased risk of infant mortality in the first year). "The results seem to be a threshold effect around four to seven cups give a day," says the study. Those eight or more cups per day (64 U.S. fluid ounces or 1.89 liters) of drinking 220% increased risk compared with nondrinkers. This research is not repeated, but has caused some doctors warn against excessive consumption of coffee during pregnancy.
Decaffeinated coffee is also available as a potential health risk for pregnant women with chemical solvents, considered the caffeine instead of other less invasive procedures to unpack. The effects of these substances, however, the solvents in question evaporate at 80-90 ° C and decaffeinated coffee beans for roasting, which at about 200 ° C. As such, these substances, namely trichloroethane and methylene chloride traces available at most, and should not pose a significant risk, embryos and fetuses.
Iron deficiency Anaemia
The consumption of coffee can lead to anemia in mothers and infants.Coffee iron interferes with the absorption of carbohydrates.
Coronary heart disease
A 2004 study attempted why the positive and negative effects of coffee conflict to discover. The study found that consumption of coffee, with a significant increase in biochemical markers of inflammation. This is a harmful effect of coffee on the cardiovascular system, which may explain why coffee has so far only to the heart at a level of four cups (24 fluid ounces or 600 ml) or less per day can help.
The health risks of decaffeinated coffee have been studied, with mixed results. A variable is, the type of decaffeination process, while other with the use of organic solvents, which leave residues, while others depend steam.
A study has shown that cafestol, a substance that is cooked in coffee drinks, dramatically increases cholesterol levels, especially in women. Filter coffee contains only trace amounts of cafestol.
Polymorphisms of the CYP1A2 gene may lead to a slower metabolism of caffeine. In patients with a slow release of the enzyme the risk of myocardial infarction (heart attack) is increased by one third (2-3 cups) by two-thirds (> 4 cups). The risk was more pronounced in people under the age of 59.
A Harvard study of more than 20 years, 128 000 people executed in 2006, the conclusion that there is no evidence for the claim that coffee consumption reduce the risk of heart disease to support. The study does show a correlation between heavy consumption of coffee and a higher degree of exposure to other cardiovascular risk factors such as smoking, high alcohol consumption and lack of exercise exercise.The results apply only to paper coffee filters, including the cooked coffee and espresso, for example. In addition, the principal investigator of the study confirmed that subsets of the larger group, the risk of heart attack if they drink a few cups of coffee per day due to genetic differences in the metabolism of caffeine.
The Iowa Women's Health Study showed that women who consumed coffee less cardiovascular events and actually lower cancer rates than the general population did. For women who drank six or more cups, the benefit was even greater. But in this study, 35% of the original participants who have already ruled out heart disease and other chronic diseases, when the study began. Because the participants were all older than 55 years, can not be a good indication of the long-term effects of coffee consumption on heart disease can be drawn from this study.
