Do Slower-Digesting Carbohydrates Brand Us Experience To A Greater Extent Than Full?

One of the nigh mutual pieces of advice inwards the health-nutrition globe is that nosotros should focus our saccharide intake on slowly-digesting carbohydrates, because they brand us experience to a greater extent than amount than rapidly-digesting carbohydrates.  Rapidly-digesting carbohydrates, such equally potatoes, stand upwards defendant of causing us to overeat, resulting inwards obesity, diabetes, in addition to many other chronic ailments.  Is this true?

This concept is normally discussed inwards damage of the glycemic index.  Foods with a high glycemic index drive blood glucose to ascent to a greater extent than than foods with a depression glycemic index, in addition to the sometime are normally digested to a greater extent than rapidly.  This mensurate was originally developed to assistance diabetics command their blood refined saccharify levels, in addition to it may indeed live useful for that purpose.  However, to a greater extent than of late it has been suggested that non-diabetics should focus on low-glycemic foods equally well.

H5N1 issue of single-meal studies exercise propose that low-glycemic carbohydrates supply to a greater extent than prolonged satiety than high-glycemic carbohydrates (1, 2, 3, 4, 5, 6, 7).  Yet these studies are often hard to interpret, because the essay out foods oftentimes differ inwards many ways too glycemic index (e.g., fiber content, calorie density).  Also, a few studies receive got either failed to replicate the finding, or flora that high-glycemic carbohydrates are truly to a greater extent than filling (8, 9, 10, 11, 12).

Many observational studies receive got shown that people who consume lower-glycemic carbohydrates tend to fare amend over time.  However, i time to a greater extent than these studies are hard to interpret, because the nigh mutual high-glycemic foods are to a greater extent than often than non highly processed, high-reward, in addition to depression inwards fiber.  Adding to my skepticism, nearly all longer-term (10+ weeks) randomized, controlled trials receive got flora that the glycemic index of the diet makes footling or no divergence inwards calorie intake, torso weight, or metabolic wellness (13, 14, 15, 16, 17, 18, 19, 20).  This is consistent with the fact that many traditional cultures receive got remained thin in addition to salubrious eating diets that are extraordinarily rich inwards high-to-medium-glycemic saccharide such equally cassava, yams, taro, sugariness potatoes, millet, rice, palm starch, in addition to potatoes (Western Diseases. Trowell in addition to Burkitt. 1981)

The single-meal studies that receive got been conducted to engagement receive got normally exclusively focused on i food, or a few foods, which makes it hard to generalize the findings.  What I truly desire to know is this: when people consume a diverseness of typical foods, is at that spot whatsoever correlation betwixt the food's glycemic index in addition to how amount that someone feels?  In other words, tin post away nosotros increase satiety past times favoring lower-glycemic foods over higher-glycemic foods inwards the context of a typical diet?

I finally flora a report that answers this question.  It was published inwards 1996.

The study

Susanna Holt in addition to colleagues recruited salubrious college students, mostly thin only including a few that were overweight (21).  The inquiry squad fed the volunteers 240-Calorie portions of 38 mutual foods individually, in addition to measured satiety, glucose, in addition to insulin levels every fifteen minutes for ii hours afterwards each essay out meal.  Test foods included many of the nigh mutual foods people consume inwards their everyday lives, for example, cereal, potatoes, fish, meat, fruit, nuts, pastries, rice, popcorn, in addition to bread.

The results

I'll cutting correct to the chase: at that spot was no association whatsoever betwixt the glycemic touching of a nutrient in addition to the satiety it provided.

Potatoes (plain) were a remarkable outlier: they were the nigh satiating nutrient of all, despite a high glycemic index.

Implications

This termination shows that with a broad diverseness of mutual foods, the glycemic index doesn't predict which ones volition live to a greater extent than filling than others, per unit of measurement calorie.  Other papers based on the exact same information prepare demonstrate that a food's poly peptide content, calorie density, fiber content, in addition to palatability are all of import predictors of satiety (22), hence nosotros know this experiment was adequately designed to bring out effects on satiety.

One of import limitation is that the report exclusively lasted ii hours.  It's possible that differences would receive got emerged if the volunteers had been studied for iii or 4 hours.

In the end, I'm non convinced that non-diabetic people exercise goodness much from the glycemic index concept.  As always, if you lot bring out that low-glycemic foods assistance you lot command your appetite, hence past times all agency function along eating them.  Yet for nigh of us, the glycemic index seems similar an unnecessary complication.