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Many people worry about occasional memory lapses that occur as they get older. To cope, it helps to talk to a doctor and also reduce stress by following healthy lifestyle habits, such as exercising, getting enough sleep, eating a healthy diet, and meditating. Using strategies to help retain information is also important. Examples include placing keys in a designated spot, taking medication at the same time each day, and using notebooks—not just memory—to organize and store information for fast retrieval.

Sudden memory lapses could be natural aspects of aging or early signs of mild cognitive impairment (MCI). With MCI, memory loss is noticeable but usually does not impede the ability to carry out daily functions. A screening test from a doctor or more advanced testing (such as brain MRI or PET scans) from a neurologist can help identify potential cognitive problems so people can seek appropriate treatment.

Having an extremely low LDL level from aggressive cholesterol-lowering therapy was not associated with cognitive impairment, according to a 2024 study.

Just as it's wise for people to take a sick day when they have a cough, fever, or nausea, certain signs indicate people need a mental health day. These include feeling burned out at work, overwhelmed by personal issues, unmotivated, exhausted by work or life demands, more anxious or depressed than usual, unable to sleep consistently, or drawn to substance use. While some spend a mental health day on indulgent activities, others run errands or tick items off their to-do list. Not taking a mental health day when needed can trigger flare-ups of depression or anxiety.

According to a 2024 study, people with high amounts of visceral fat—the deep hidden fat surrounding abdominal organs—also have higher levels of abnormal proteins in the brain that are hallmarks of Alzheimer's disease.

A 2024 study suggested that older adults who undergo cataract surgery to improve vision may have a lower risk of developing dementia.

There's no clear-cut answer about whether taking antihistamines for allergies increases dementia risk. Antihistamines have anticholinergic effects, which might increase the risk for dementia by blocking a particular brain neurotransmitter or increasing brain inflammation. But studies on whether there's any link between antihistamines and dementia have produced conflicting findings. Doctors advise taking the lowest antihistamine dose possible or using another medication for symptom relief.