People who tend to experience blood sugar spikes in the hours after eating could face a higher risk of a common brain disorder. Preventive measuresWhile some people may have a genetic propensity for increased blood sugar spikes after eating, Freirich noted that dietary choices can make a big impact. "Fiber is helpful for improving blood sugar stability, but is also beneficial for heart health, digestion and reducing inflammation, all of which contribute to improved brain health," Freirich said. TEST YOURSELF WITH OUR LATEST LIFESTYLE QUIZ"In addition to diet, a short burst of activity after eating, such as a walk, can also help lower your blood sugar spike after eating," Freirich said. Anyone who has questions about blood sugar levels should have a discussion with a doctor about tests to assess risk.