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A low GI diet may not help your blood sugar.
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<blockquote data-quote="phoenix" data-source="post: 711171" data-attributes="member: 12578"><p>QUOTE] We caution that we did not study lowering glycemic index in people with type 2 diabetes to control their hyperglycemia; 2 meta-analyses reported benefits<a href="http://jama.jamanetwork.com/article.aspx?articleid=2040224#joi140167r6" target="_blank"><u>6</u></a>,<a href="http://jama.jamanetwork.com/article.aspx?articleid=2040224#joi140167r39" target="_blank"><u>39</u></a> and our findings should not be extended to type 2 diabetes.</p></blockquote><p>The research wasn't conducted in the context of diabetes. It was suggesting that within the context of a DASH type diet already known to improve CVD risk factors the GI didn't add anything extra . The hypothesis was that it would affect these measures.</p><p>Insulin sensitivity was based on proxy measures of glucose and insulin during an OGTT. Some previous studies using more direct methods (euglycemic clamp) have also shown no change, some have shown reduced sensitivity. (see protocol supplement) Does this particular trial add anything? Most studies seem to find that weight loss increases insulin sensitivity no matter what the diet and this trial wasn't devised for weight loss.</p><p>.</p><p>Pod cast summary <a href="http://media.jamanetwork.com/jama-report/lower-glycemic-index-diet-did-not-improve-risk-factors-for-heart-disease-and-diabetes/" target="_blank">http://media.jamanetwork.com/jama-report/lower-glycemic-index-diet-did-not-improve-risk-factors-for-heart-disease-and-diabetes/</a></p><p>Paper <a href="http://jama.jamanetwork.com/article.aspx?articleid=2040224#joi140167f3" target="_blank">http://jama.jamanetwork.com/article.aspx?articleid=2040224#joi140167f3</a></p><p>Fig 2 shows the effect on post prandial glucose levels. Which in the context of the measures they were reporting on was not mentioned.</p><p>Apparently fasting glucose in the lower carb/low GI arm rose but the lowest average reading was 94 the highest 97mg /dl so really very little between them (5.22-5.38mmol/l)</p><p></p><p>You'll have to read the full paper because with 4 conditions it is impossible to summarise. The supplements show a lot more detail including the diets . Here's one day, (2, 000 cals; there were higher cal versions ) For comparison, at the moment I probably have the same percentage of carbs in my diet as the so called low carb arm ( around 40%, higher if I'm more active) but this breakfast contains 4 times the amount of oats that I would normally eat for breakfast and I use the GI as a tool. (and a quick skim of the menus after Nigels last post,I don't think I saw a legume in any of them. )</p><p>[ATTACH]9889[/ATTACH]</p><p>[/QUOTE]</p>
[QUOTE="phoenix, post: 711171, member: 12578"] QUOTE] We caution that we did not study lowering glycemic index in people with type 2 diabetes to control their hyperglycemia; 2 meta-analyses reported benefits[URL='http://jama.jamanetwork.com/article.aspx?articleid=2040224#joi140167r6'][U]6[/U][/URL],[URL='http://jama.jamanetwork.com/article.aspx?articleid=2040224#joi140167r39'][U]39[/U][/URL] and our findings should not be extended to type 2 diabetes.[/QUOTE] The research wasn't conducted in the context of diabetes. It was suggesting that within the context of a DASH type diet already known to improve CVD risk factors the GI didn't add anything extra . The hypothesis was that it would affect these measures. Insulin sensitivity was based on proxy measures of glucose and insulin during an OGTT. Some previous studies using more direct methods (euglycemic clamp) have also shown no change, some have shown reduced sensitivity. (see protocol supplement) Does this particular trial add anything? Most studies seem to find that weight loss increases insulin sensitivity no matter what the diet and this trial wasn't devised for weight loss. . Pod cast summary [url]http://media.jamanetwork.com/jama-report/lower-glycemic-index-diet-did-not-improve-risk-factors-for-heart-disease-and-diabetes/[/url] Paper [url]http://jama.jamanetwork.com/article.aspx?articleid=2040224#joi140167f3[/url] Fig 2 shows the effect on post prandial glucose levels. Which in the context of the measures they were reporting on was not mentioned. Apparently fasting glucose in the lower carb/low GI arm rose but the lowest average reading was 94 the highest 97mg /dl so really very little between them (5.22-5.38mmol/l) You'll have to read the full paper because with 4 conditions it is impossible to summarise. The supplements show a lot more detail including the diets . Here's one day, (2, 000 cals; there were higher cal versions ) For comparison, at the moment I probably have the same percentage of carbs in my diet as the so called low carb arm ( around 40%, higher if I'm more active) but this breakfast contains 4 times the amount of oats that I would normally eat for breakfast and I use the GI as a tool. (and a quick skim of the menus after Nigels last post,I don't think I saw a legume in any of them. ) [ATTACH]9889[/ATTACH] [/QUOTE]
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