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#Post#: 1287--------------------------------------------------
Yogurt has no probiotic effect if eaten while on antibiotics but
S. boulardii does
By: agate Date: July 10, 2016, 8:25 pm
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From NutritionAction.com (part of the Center for Science in the
Public Interest), July 8, 2016:
[quote]Heard the advice to eat yogurt when taking antibiotics?
There’s something else that has better evidence.
David Schardt
Email Email
From 5 percent to 35 percent of people taking antibiotics
develop diarrhea.
“Antibiotics seriously disrupt the microbiome for several months
before it recovers and returns to its previous state,” notes the
University of Washington’s Lynne McFarland. The microbiome is
all of the billions of bacteria and other microorganisms living
in your intestinal tract.
“My doctor said I should eat yogurt when I am taking my
antibiotics,” a patient emailed the website zocdoc.com,which
helpsthe best yogurt consumers find new doctors. “Why did she
say I should eat yogurt? Do I really need too?” the patient
asked.
The Answer: No.
What’s in yogurt.
Yogurt is made by adding two bacteria (Lactobacillus bulgaricus
and Streptococcus thermophilus) to milk. The bacteria break down
the milk’s sugar (lactose) into lactic acid, which makes the
yogurt more digestible for those with lactose intolerance and
gives yogurt its tart flavor.
Many people, including doctors, believe that these bacteria also
can replenish your gut with healthy bacteria after you take
antibiotics. That would make them probiotics. But the evidence
suggests otherwise.
To be a probiotic and change the balance of microorganisms in
the large intestine, bacteria first have to survive the strong
acid of the stomach and then the disruptive bile salts of the
small intestine in order to reach the large intestine intact.
Most bacteria don’t make it through this gauntlet.
Unfortunately, that includes the two yogurt bacteria. “They
don’t survive passage through the GI tract, which is essential
if they’re going to have a probiotic effect in the large
intestine,” says Mary Ellen Sanders, of the International
Scientific Association for Probiotics and Prebiotics.
The one study came up empty.
In the only study to look at commercial yogurt in generally
healthy people, researchers in the UK gave 118 children and
adults strawberry yogurt that contained 1 billion of the yogurt
bacteria every day during the week they took an antibiotic and
for five days after. Another 120 got just the antibiotic.
The results: “Eating yogurt while taking antibiotics did not
prevent antibiotic-associated diarrhea,” the researchers found.
No surprise.
However, among those aged 60 and older, yogurt eaters reported
less flatulence and abdominal pain than those who got just the
antibiotic. Of course, it’s possible that the yogurt eaters felt
better because they expected the yogurt to help.
What else to take?
So, what could help with the diarrhea many people experience
when they take antibiotics?
Saccharomyces boulardii. That’s a yeast you can buy as a
probiotic dietary supplement.
In a meta-analysis that pooled 15 studies, adults taking
antibiotics were 52 percent less likely to develop diarrhea if
they also took S. boulardii than if they took a placebo instead.
Since S. boulardii is a yeast and not a bacterium, it isn’t
killed by antibiotics.
____________________
Sources: JAMA 307: 1959, 2012; Br. J. Gen. Pract. 57: 953,
2007.[/quote]
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