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Did science backtrack regarding coffee causing dehydration?
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The question below highlights recent studies that conclude coffee does not necessarily dehydrate.
Is decaffeinated coffee a diuretic?
Why has it always been assumed otherwise? Perhaps the evidence was based on tests of pure caffeine?
The look given when told I still drink it when told not to by a doctor felt akin to taking street drugs
coffee
asked 5 hours ago
Jodes
1393
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up vote
2
down vote
favorite
The question below highlights recent studies that conclude coffee does not necessarily dehydrate.
Is decaffeinated coffee a diuretic?
Why has it always been assumed otherwise? Perhaps the evidence was based on tests of pure caffeine?
The look given when told I still drink it when told not to by a doctor felt akin to taking street drugs
coffee
asked 5 hours ago
Jodes
1393
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
The question below highlights recent studies that conclude coffee does not necessarily dehydrate.
Is decaffeinated coffee a diuretic?
Why has it always been assumed otherwise? Perhaps the evidence was based on tests of pure caffeine?
The look given when told I still drink it when told not to by a doctor felt akin to taking street drugs
coffee
asked 5 hours ago
Jodes
1393
The question below highlights recent studies that conclude coffee does not necessarily dehydrate.
Is decaffeinated coffee a diuretic?
Why has it always been assumed otherwise? Perhaps the evidence was based on tests of pure caffeine?
The look given when told I still drink it when told not to by a doctor felt akin to taking street drugs
coffee
coffee
asked 5 hours ago
Jodes
1393
asked 5 hours ago
Jodes
1393
asked 5 hours ago
Jodes
1393
asked 5 hours ago
Jodes
1393
asked 5 hours ago
Jodes
1393
1393
add a comment |Â
add a comment |Â
1 Answer
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Why has it been long assumed caffeine or coffee is dehydrating?
Because caffeine is a mild diuretic - it stimulates water excretion through the kidneys. But the amount of water you consume with caffeinated drinks is usually greater than the amount of water you lose in urine due to caffeine diuretic effect, so there is no net water loss and hence no dehydration.
Also, regular (daily) coffee drinkers will usually quickly (within few days) develop tolerance to caffeine effects including the diuretic effect.
Source (PubMed, 2003):
Caffeine and related methylxanthine compounds are recognized as having
a diuretic action...
The available literature suggests that acute ingestion of caffeine in
large doses (at least 250-300 mg, equivalent to the amount found in
2-3 cups of coffee or 5-8 cups of tea) results in a short-term
stimulation of urine output in individuals who have been deprived of
caffeine for a period of days or weeks. A profound tolerance to the
diuretic and other effects of caffeine develops, however, and the
actions are much diminished in individuals who regularly consume tea
or coffee. Doses of caffeine equivalent to the amount normally found
in standard servings of tea, coffee and carbonated soft drinks appear
to have no diuretic action.
answered 2 hours ago
Jan
6,035738
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
Why has it been long assumed caffeine or coffee is dehydrating?
Because caffeine is a mild diuretic - it stimulates water excretion through the kidneys. But the amount of water you consume with caffeinated drinks is usually greater than the amount of water you lose in urine due to caffeine diuretic effect, so there is no net water loss and hence no dehydration.
Also, regular (daily) coffee drinkers will usually quickly (within few days) develop tolerance to caffeine effects including the diuretic effect.
Source (PubMed, 2003):
Caffeine and related methylxanthine compounds are recognized as having
a diuretic action...
The available literature suggests that acute ingestion of caffeine in
large doses (at least 250-300 mg, equivalent to the amount found in
2-3 cups of coffee or 5-8 cups of tea) results in a short-term
stimulation of urine output in individuals who have been deprived of
caffeine for a period of days or weeks. A profound tolerance to the
diuretic and other effects of caffeine develops, however, and the
actions are much diminished in individuals who regularly consume tea
or coffee. Doses of caffeine equivalent to the amount normally found
in standard servings of tea, coffee and carbonated soft drinks appear
to have no diuretic action.
answered 2 hours ago
Jan
6,035738
add a comment |Â
up vote
3
down vote
Why has it been long assumed caffeine or coffee is dehydrating?
Because caffeine is a mild diuretic - it stimulates water excretion through the kidneys. But the amount of water you consume with caffeinated drinks is usually greater than the amount of water you lose in urine due to caffeine diuretic effect, so there is no net water loss and hence no dehydration.
Also, regular (daily) coffee drinkers will usually quickly (within few days) develop tolerance to caffeine effects including the diuretic effect.
Source (PubMed, 2003):
Caffeine and related methylxanthine compounds are recognized as having
a diuretic action...
The available literature suggests that acute ingestion of caffeine in
large doses (at least 250-300 mg, equivalent to the amount found in
2-3 cups of coffee or 5-8 cups of tea) results in a short-term
stimulation of urine output in individuals who have been deprived of
caffeine for a period of days or weeks. A profound tolerance to the
diuretic and other effects of caffeine develops, however, and the
actions are much diminished in individuals who regularly consume tea
or coffee. Doses of caffeine equivalent to the amount normally found
in standard servings of tea, coffee and carbonated soft drinks appear
to have no diuretic action.
answered 2 hours ago
Jan
6,035738
add a comment |Â
up vote
3
down vote
up vote
3
down vote
Why has it been long assumed caffeine or coffee is dehydrating?
Because caffeine is a mild diuretic - it stimulates water excretion through the kidneys. But the amount of water you consume with caffeinated drinks is usually greater than the amount of water you lose in urine due to caffeine diuretic effect, so there is no net water loss and hence no dehydration.
Also, regular (daily) coffee drinkers will usually quickly (within few days) develop tolerance to caffeine effects including the diuretic effect.
Source (PubMed, 2003):
Caffeine and related methylxanthine compounds are recognized as having
a diuretic action...
The available literature suggests that acute ingestion of caffeine in
large doses (at least 250-300 mg, equivalent to the amount found in
2-3 cups of coffee or 5-8 cups of tea) results in a short-term
stimulation of urine output in individuals who have been deprived of
caffeine for a period of days or weeks. A profound tolerance to the
diuretic and other effects of caffeine develops, however, and the
actions are much diminished in individuals who regularly consume tea
or coffee. Doses of caffeine equivalent to the amount normally found
in standard servings of tea, coffee and carbonated soft drinks appear
to have no diuretic action.
answered 2 hours ago
Jan
6,035738
Why has it been long assumed caffeine or coffee is dehydrating?
Because caffeine is a mild diuretic - it stimulates water excretion through the kidneys. But the amount of water you consume with caffeinated drinks is usually greater than the amount of water you lose in urine due to caffeine diuretic effect, so there is no net water loss and hence no dehydration.
Also, regular (daily) coffee drinkers will usually quickly (within few days) develop tolerance to caffeine effects including the diuretic effect.
Source (PubMed, 2003):
Caffeine and related methylxanthine compounds are recognized as having
a diuretic action...
The available literature suggests that acute ingestion of caffeine in
large doses (at least 250-300 mg, equivalent to the amount found in
2-3 cups of coffee or 5-8 cups of tea) results in a short-term
stimulation of urine output in individuals who have been deprived of
caffeine for a period of days or weeks. A profound tolerance to the
diuretic and other effects of caffeine develops, however, and the
actions are much diminished in individuals who regularly consume tea
or coffee. Doses of caffeine equivalent to the amount normally found
in standard servings of tea, coffee and carbonated soft drinks appear
to have no diuretic action.
answered 2 hours ago
Jan
6,035738
answered 2 hours ago
Jan
6,035738
answered 2 hours ago
Jan
6,035738
answered 2 hours ago
Jan
6,035738
6,035738
add a comment |Â
add a comment |Â
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