FIT How much grapefruit is too much grapefruit?

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King Dick

Well-Known Member
Jul 7, 2005
9,359
"A study from the Scripps Clinic (San Diego) reported that subjects eating half a grapefruit or drinking 8 ounces of grapefruit juice three times a day while otherwise eating normally lost an average of 4 pounds in 12 weeks, with some test subjects losing more than 10 pounds without dieting. The researchers suggest the effect is likely due to grapefruit’s ability to reduce insulin levels. Try adding half a grapefruit to a few of your meals such as breakfast, lunch and preworkout."
 

ralyks

New Member
Feb 22, 2005
6,751
"A study from the Scripps Clinic (San Diego) reported that subjects eating half a grapefruit or drinking 8 ounces of grapefruit juice three times a day while otherwise eating normally lost an average of 4 pounds in 12 weeks, with some test subjects losing more than 10 pounds without dieting. The researchers suggest the effect is likely due to grapefruit’s ability to reduce insulin levels. Try adding half a grapefruit to a few of your meals such as breakfast, lunch and preworkout."
Interesting :cool:

My only concern would have been the acidity having a negative impact on tooth enamel.

And this is kind of out there, but doesn't grapefruit have high levels of CP3A4 (or something like that) enzyme? The stuff that causes a lot of meds to break down slower hence extending their half life?
 

eljefedetonto

Active Member
Aug 4, 2006
51,352
STL, MO/AAR, DK
Interesting :cool:

My only concern would have been the acidity having a negative impact on tooth enamel.

And this is kind of out there, but doesn't grapefruit have high levels of CP3A4 (or something like that) enzyme? The stuff that causes a lot of meds to break down slower hence extending their half life?

grapefruit blocks CYP3A4 in the liver, which would normally breakdown certain drugs.

but yes, the end result is absoutely correct. :)
 

ralyks

New Member
Feb 22, 2005
6,751
grapefruit blocks CYP3A4 in the liver, which would normally breakdown certain drugs.

but yes, the end result is absoutely correct. :)
Thaat's why I couldn't find the wiki page.
http://en.wikipedia.org/wiki/CYP3A4

I remember it because of the old lady in "Requiem for a Dream". That's also the movie that scared me off of drugs for life.

http://en.wikipedia.org/wiki/Grapefruit_juice#Drug_interactions
Don't take viagra with grape fruit LOL
Last paragraph on the page says it can increase estrogen levels and is associated with a 30% increase in breast cancer.
 
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Acciaio

New Member
Mar 12, 2010
865
Seattle
Just an fyi- grapefruit will jack up the absorption of many medications.


Whoa, didn't know about the absorption.... Well I only take ephedrine, caffeine, flax seed oil, and a multivitamin so that's okay I guess. I also brush my teeth when I'm bored; which turns out to be 4-5 times a day. That should take care of most of the acid wear.
 

ralyks

New Member
Feb 22, 2005
6,751
Brushing your teeth too frequently can also damage enamel - which is what "acid wear" is.
 

smb is me

Active Member
May 21, 2008
2,746
In fact, brushing your teeth 4-5 times a day would increase the acid wear. (acid weakens the enamel, then you brush it away with your toothbrush in its weakened state).

Swishing milk, or baking soda or some other strong base would help tho, counteracting the acid in your mouth.
 

smb is me

Active Member
May 21, 2008
2,746
everytime you eat a grapefruit make sure you jam a bunch of baking soda in your mouth

:werd:

really, i don't think it'd be an issue, even if you are eating a lot of grapefruit per day. Not something i would be worry about. I was just playing:

themoreyouknow.jpg
 

apman0000

OT Supporter
Oct 18, 2005
13,241
assuming you don't take prescription medications then go for it who cares, grapefruit is good for ya.

(assuming you aren't drowning them in sugar)
 
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