In a study, people who ate rye bread with breakfast were less hungry before and after lunch compared with people who ate wheat. Rye's super-high fiber content probably has something to do with it. But researchers suspect that rye may also produce a lower insulin response than wheat bread (this would help with hunger) and that rye may have a unique fiber composition that keeps people feeling full longer.
Of all the rye breads tested, rye-bran bread had the best effect on hunger. Makes sense, since it also has the highest fiber content of the breads.
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