Q: Some days, I feel like my brain is turning to mush. I’m only 62 but I forget words or where I put the car keys or my phone. It may be related to stress at home and work, but whatever the cause, I want it to stop. Suggestions? — Gregory Y., Urbana, Illinois A: There are many causes of cognition problems, but you indicate that yours are from stress. Well, stress — especially chronic relationship stress — is the most common cause of cognition problems. The Cleveland Clinic Wellness website explains that it’s because it can affect your nutrition (you may eat excess comfort foods or skip meal…