Study Finds Pasta Shape Does Not Affect Digestion, Whole Grain and Cooking Time Matter More
Dr. Maya Rozman explains that the shape of pasta, such as spaghetti, penne, fusilli, or rigatoni, does not significantly influence digestion speed or blood sugar levels. Instead, the type of flour used and the degree of cooking have a greater impact. Pasta made from durum wheat, a hard wheat variety high in protein, digests more slowly due to its dense structure, which helps moderate blood sugar spikes compared to many other white flour products. However, the label "durum" does not guarantee whole grain content, as durum wheat pasta can be refined and lack the bran and germ parts of the grain. For those seeking whole grain pasta, the ingredient list should explicitly state "whole durum wheat" or "whole wheat flour."
Whole grain pasta offers more dietary fiber, magnesium, B vitamins, and other nutrients found in the outer layers of the grain. It typically contains 7 to 9 grams of fiber per 100 grams of dry pasta, compared to about 3 grams in regular pasta, with minimal calorie differences. Gluten-free pasta is essential for people with celiac disease or gluten intolerance but does not inherently provide better nutrition. Such pasta is often made from rice or corn and may have lower protein and fiber than durum wheat pasta. Consumers are advised to check ingredient lists and nutrition labels rather than relying solely on "gluten-free" claims.
Pasta made primarily from legumes like lentils or chickpeas is nutritionally preferable to wheat pasta with only small amounts of legume flour added. Cooking time also affects digestion; pasta cooked al dente retains a denser starch structure that slows digestion, while overcooked pasta breaks down more easily and can raise blood sugar faster. Dr. Rozman recommends following package instructions for al dente cooking and avoiding overcooking.
Finally, the overall meal composition matters more than pasta shape. Combining pasta with protein, vegetables, and some fat slows stomach emptying and moderates blood sugar increases more effectively than the choice of pasta shape alone.
