|Coffee Harm - 11 potential health risks of coffee drinking|
Coffee is not usually considered as a healthy food so I decided to do my own little research and noted 11 potential health risks of coffee drinking. I think this information is very helpful. Here is what I have found:
(original post: http://www.squidoo.com/CoffeeHarm)
1 Heart disease
The relation between coffee consumption and risk of cardiovascular disease has been examined in many studies, but the results remain controversial. Most prospective cohort studies have not found coffee consumption to be associated with significantly increased cardiovascular disease risk. The strongest evidence for the suggestion that coffee is associated with increased risk of coronary heart disease comes from the case control studies.
2 Increased cholesterol levels
Heavy consumption of boiled coffee elevates blood total and LDL cholesterol levels[. Unfiltered coffee is a significant source of cafestol and kahweol, which are diterpenes responsible for cholesterol-raising effects of coffee. Diterpenes are extracted by hot water but are retained by a paper filter. This explains why filtered coffee does not affect cholesterol, whereas Scandinavian boiled, cafetiere, and Turkish coffees do.
3 Damage to arteries
Coffee negatively affects the blood vessel tone and function (increases arterial stiffness and wave reflections).
4 Heart rhythm disturbances
There is only little experimental evidence that caffeine causes cardiac arrhythmias.
5 Blood pressure
Although coffee consumption is not a significant risk factor for hypertension, it produces unfavourable effects on blood pressure. No doubt caffeine is responsible for blood pressure increase. However, there is some evidence, that when caffeine is ingested from coffee, it has a small effect on blood pressure. People prone to hypertension may be more susceptible to coffee blood pressure elevating effects. Recent Italian study found that coffee drinking can slightly increase the risk for development of sustained hypertension in persons with elevated blood pressure.
6 Osteoporosis (bone loss)
Coffee intake may induce an extra urinary excretion of calcium. Heavy coffee consumption (4 cups=600 ml or more) can modestly increase the risk of osteoporosis, especially in women with a low calcium intake.
7 Disrupted sleep, nervousness and anxiety
Excess caffeine can overstimulate the central nervous system. High amounts of caffeine produce negative effect on sleep onset and sleep quality. However, there are large individual differences in the effects of caffeine on sleep. Many people consume coffee during the evening and have no problems falling asleep. Some people find that the mild stimulation of caffeine consumed shortly before a bed time delays the time to fall asleep.
Some people suffer from heartburn after drinking coffee. Coffee promotes gastro-oesophageal reflux, but is not associated with dyspepsia.
The caffeine in coffee is a mild diuretic and can increase the volume of urine excreted. However, this effect can be easily counteracted by the drinking extra glass of water.
10 Coffee during Pregnancy raises miscarriage risk
The effects of coffee during pregnancy is extensively researched - and the results of the various studies into the effects of caffeine and coffee on pregnant women, fertility and the development of the growing baby are contradictory.
11 Rheumatoid arthritis
Decaffeinated coffee may increase the risk of rheumatoid arthritis. Researchers speculate that rather than the presence or absence of caffeine being the culprit, there may be something in the way decaffeinated coffee is processed that triggers an arthritic response, perhaps industrial solvents.
|Last Updated ( Wednesday, 12 January 2011 22:13 )|