After I eat a meal (nothing light or heavy, low carbs), I experiences loss of energy, fatigued, drowsy within 30 minutes of eating. Within an hour or more, without eating, suddenly my energy returns, drowsiness leaves, and I am able to move! I assumed this is insulin resistance. It comes in spells, more now than before. Any suggestions? I am having some closet calls when driving, missing days of work or getting behind with work because of what stated above.