Pasta is made of wheat mixed with water, and since wheat is not Paleo, neither is pasta.
The Problems With Pasta
Wheat is one of the biggest offenders to a healthy diet. Not only does it contain gluten, a harmful anti-nutrient, but it is also extremely high in carbohydrates and low in nutrients. That combination means it causes a spike in blood sugar, followed by a crash. The result leaves you feeling tired, cranky, and craving more carbs to get your blood sugar back up. Once you do, the cycle continues.
Pasta and Insulin
The problem with this cycle is that it results in chronically high insulin levels, which leads to insulin resistance. This happens when your cells get so inundated with insulin they stop accepting it. Your pancreas has to produce more insulin to compensate and the cycle continues. This is a dangerous precursor to a number of chronic illnesses, including diabetes and Alzheimer’s.
Why We Avoid Gluten
Gluten is problematic because it is inflammatory and increases the permeability of the lining of our gut. It’s the stuff that holds bread together and makes the dough sticky. It does the same thing in our stomach, creating problems because the lining of our gut is designed to be permeable and let some nutrients into the bloodstream, while keeping others in the stomach.
Gluten messes with this system by sticking to the lining of our gut and forcing it to become more permeable. Then nutrients can get through, but so can toxins and undigested food and the body creates an immune response to deal with these foreign objects. Part of that immune response involves inflammation, and chronic inflammation (just like insulin resistance) is linked to a number of health problems.
Mark Sisson has a whole list of reasons why grains are unhealthy.