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    <recommendedItem id="20100101_19_431"
                     title="Down a Beer to Improve Bone Health? Not So Fast"
                     score="0.013"
                     href="http://www.medpagetoday.com/PrimaryCare/DietNutrition/tb/18347?impressionId=1265743344103"
                     
      &lt;p&gt;A flagon of ale may indeed be a good source of dietary silicon, a recent study showed, but experts say any attempt to link beer drinking to bone health is not based on scientific data.&lt;/p&gt;
&lt;p&gt;The study of 100 commercial beers in the February issue of the &lt;em&gt;Journal of the Science of Food and Agriculture&lt;/em&gt;, by Charles Bamforth, PhD, DSc, and Troy Casey, of the University of California Davis, examined the silicon content that results from different ingredients and brewing processes.&lt;/p&gt;
&lt;p&gt;Although a press release issued with the study prominently mentioned the link between silicon and bone health, the study itself did not look at bone mineral density or analyze any patient data at all, according to several researchers contacted by &lt;em&gt;MedPage Today&lt;/em&gt; and ABC News.&lt;/p&gt;
&lt;p&gt;The authors wrote that they explored the silicon content in beer because the popular beverage has been identified as one of the richest potential sources of dietary silicon in the Western diet. The average intake is 20 to 50 mg/day.&lt;/p&gt;
&lt;p&gt;The beers sampled contained an average of 29.4 mg/L of silicon, with a range of 6.4 to 56.4 mg/L. Beers made from a barley-based grist (as opposed to wheat-based beers ) and brews containing more hops had the highest silicon levels.&lt;/p&gt;
&lt;p&gt;The beer type with the overall highest silicon level was India Pale Ale, with an average of 41.2 mg/L. Other ales came in second with 32.8 mg/L.&lt;/p&gt;
&lt;p&gt;Nonalcoholic beers, light lagers, and wheat beers had the least silicon.&lt;/p&gt;
&lt;p&gt;In the end, the authors concluded that &quot;beer is a substantial source of silicon in the diet&quot; and that &quot;beers containing high levels of malted barley and hops are richest in silicon,&quot; but they did not attempt to establish a link between beer drinking and bone health.&lt;/p&gt;
&lt;p&gt;Experts contacted for comment on the study also cautioned the public against establishing any such connection.&lt;/p&gt;
&lt;p&gt;&quot;To conclude any bone health benefits from this study would require a great leap,&quot; Tim Byers, MD, MPH, deputy director of the University of Colorado Cancer Center in Aurora, wrote in an e-mail.&lt;/p&gt;
&lt;p&gt;Other researchers noted that previous studies have shown an association between alcohol consumption and an increased risk of fracture.&lt;/p&gt;
&lt;p&gt;That&apos;s probably because of a greater chance of falling after drinking, according to Walter Willett, MD, DrPH, of the Harvard School of Public Health.&lt;/p&gt;
&lt;p&gt;In fact, Stephen Richardson, MD, an endocrinologist at NYU Langone Medical Center, noted that &quot;alcohol consumption is a risk factor for osteoporosis.&quot;&lt;/p&gt;
&lt;p&gt;Still, there is some evidence supporting a positive link between overall dietary silicon and bone health.&lt;/p&gt;
&lt;p&gt;A 2004 cross-sectional study in the &lt;em&gt;Journal of Bone and Mineral Research&lt;/em&gt; that used data from the Framingham Offspring cohort found a significant association between greater dietary silicon intake, including that from beer, and higher bone mineral density in the hip in men and premenopausal women.&lt;/p&gt;
&lt;p&gt;The researchers concluded: &quot;These findings suggest that higher dietary silicon intake in men and younger women may have salutary effects on skeletal health, especially cortical bone health, that has not been previously recognized.&quot;&lt;/p&gt;
&lt;p&gt;Another study by the same group published last year in the &lt;em&gt;American Journal of Clinical Nutrition&lt;/em&gt; found that moderate consumption of alcohol, including beer, wine, and liquor, was associated with higher bone mineral density in men and postmenopausal women.&lt;/p&gt;
&lt;p&gt;However, it also showed that men who drank too much liquor were more likely to have lower spine and hip bone mineral density.&lt;/p&gt;
&lt;p&gt;The relationship between beer and bone mineral density appeared to be mediated by silicon, the researchers concluded.&lt;/p&gt;
&lt;p&gt;Bottom line: considering the increased fracture risk and the various other problems associated with drinking too much alcohol, experts agree that guzzling beer is not strategy for improving bone health.&lt;/p&gt;
&lt;p&gt;&quot;In the absence of bone density values or preferably fracture incidence, it would be premature to tout beer as a preventative or treatment,&quot; Richardson said.&lt;/p&gt;
&lt;p&gt;David Katz, MD, MPH, of the Yale School of Public Health, agreed.&lt;/p&gt;
&lt;p&gt;&quot;This is NOT a reason to drink beer,&quot; he said in an e-mail. &quot;This is simply a bit of good news for those who do drink beer already  --  yours truly among them!&quot;&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The authors did not make any financial disclosures.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;&lt;p&gt;&lt;em&gt;This article was developed in collaboration with ABC News. &lt;/em&gt;&lt;img src=&quot;http://www.medpagetoday.com/upload/2009/10/1/14357_1.jpg&quot; mce_src=&quot;http://www.medpagetoday.com/upload/2009/10/1/14357_1.jpg&quot; alt=&quot;&quot;&gt;&lt;/p&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_322"
                     title="Switch to Low-Fat Milk in Schools Shows Benefit"
                     score="0.005"
                     href="http://www.medpagetoday.com/PrimaryCare/DietNutrition/tb/18192?impressionId=1265743344103"
                     
      &lt;p&gt;When New York City public schools made the switch from whole milk to skim or low-fat milk, students cut their annual fat and total calorie consumption, department researchers found.&lt;/p&gt;
&lt;p&gt;Milk-drinking students consumed 5,960 fewer calories and 619 fewer grams of fat per year after they made the switch, Philip M. Alberti, PhD, of the New York Department of Health and Mental Hygiene, and colleagues reported in the Jan. 29 issue of CDC&apos;s &lt;em&gt;Morbidity &amp;amp; Mortality Weekly Report&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;At 3,500 calories per pound, the reduction would be the equivalent of 1.7 pounds of body weight over the course of a year.&lt;/p&gt;
&lt;p&gt;&quot;The switch to lower-fat milk likely has improved the overall nutritional environment of NYC public schoolchildren,&quot; Alberti and colleagues wrote.&lt;/p&gt;
&lt;p&gt;On the other hand, most of the low-fat milk consumed was chocolate milk, which has a substantially higher sugar content than unflavored milk, the researchers found.&lt;/p&gt;
&lt;p&gt;In 2005, the New York City Department of Education began reviewing its food policies and determined that replacing whole milk with fat-free or low-fat milk could decrease students&apos; fat and calorie intake.&lt;/p&gt;
&lt;p&gt;At subsequent board meetings, milk industry advocates suggested that without whole milk or chocolate- or strawberry-flavored milk, student milk consumption would decline, thus decreasing calcium and vitamin intake.&lt;/p&gt;
&lt;p&gt;Nonetheless, the Department of Education began phasing out whole milk in 2005, and limited flavored milk to fat-free chocolate milk.&lt;/p&gt;
&lt;p&gt;The researchers didn&apos;t have data on student consumption of milk, so they analyzed system-wide school milk purchases.&lt;/p&gt;
&lt;p&gt;They found that per-student school milk purchases dropped 8% between 2004 and 2006, but then gradually began to increase. By 2009, purchases had risen 1.3% from five years prior: from 112 per student in 2004 to 114 in 2009.&lt;/p&gt;
&lt;p&gt;Fat-free milk accounted for 42% of all purchases in 2009, compared with less than 7% in 2004.&lt;/p&gt;
&lt;p&gt;In 2004, students purchased more than 18 billion calories and 520 million grams of fat in the form of milk. That fell to less than 14 billion calories and 98 million grams of fat in 2009, representing a 25% and 81% decrease, respectively.&lt;/p&gt;
&lt;p&gt;Over that five-year time period, the researchers calculated that if calorie and fat savings were distributed among all students  --  including those who don&apos;t drink milk  --  they would consume 3,484 fewer calories and 382 fewer grams of fat each year.&lt;/p&gt;
&lt;p&gt;If the data were limited to students who do drink milk during the school day  --  62% of students in 2004 and 63% in 2009  --  the savings increased to 5,960 calories and 619 fat grams per year.&lt;/p&gt;
&lt;p&gt;Alberti and colleagues wrote that the data show the milk policy change reduced fat and calorie intake while still providing protein, calcium, and vitamins A and D.&lt;/p&gt;
&lt;p&gt;&quot;Other school systems can use these results to guide changes to their own school food policies,&quot; they said.&lt;/p&gt;
&lt;p&gt;They noted, however, that the majority of low-fat milk consumed  --  60% of all milk purchases  --  was chocolate milk, a concern because sweetened milk has more calories than reduced-fat white milk and contains twice as much sugar.&lt;/p&gt;
&lt;p&gt;But limiting its availability would &quot;further reduce milk consumption,&quot; they wrote.&lt;/p&gt;
&lt;p&gt;The authors noted that the study was limited because there were no data to evaluate the magnitude of the correlation between milk purchasing and milk consumption. Also, no data were collected on students&apos; diets, so the researchers could not assess the policy&apos;s larger effects on diet.&lt;/p&gt;

    </recommendedItem>
    <recommendedItem id="20090101_1_231"
                     title="Vitamin D Supplements in Utero Linked to Better Pediatric Bones"
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