If you have trouble falling asleep, problems remembering or concentrating are likely to occur more than a decade later, according to new research. Trouble sleeping was the only symptom that predicted poor cognitive performance 14 years later when compared with other symptoms of insomnia, the study shows. There is growing evidence linking insomnia and cognitive impairment in older adults, but interpreting these associations can be difficult based on an individual’s dynamics, the researchers say. “By investigating associations between specific insomnia complaints and cognition, we hoped to gain additional clarity on how these different sleep problems may lead to poor cognitive outcomes,” says Afsara Zaheed, psychology doctoral candidate at the University of Michigan and lead author of the paper in the journal Sleep. The data involved nearly 2,500 adults aged 65+ from the Health and Retirement Study, a longitudinal study of aging in a nationally representative sample of adults aged 51+ in the United …