Alzheimer's Disease Archive

In addition to hallmark symptoms such as persistent sadness and apathy, depression can also trigger memory problems. People with depression may lack focus, leading to memory lapses. Depression may also alter brain chemicals that help people sustain attention. Memory problems in depression show up differently than in dementia, making people unable to retrieve long-term memories. Positive memories also fade first in depression because brain areas that process positive or rewarding experiences are disrupted.

A subconjunctival hemorrhage is a broken blood vessel in the eye. It's usually not serious and resolves on its own within two weeks. People who also experience eye pain or vision changes may have an eye infection and should see a doctor.

Bouts of dizziness can be unsettling sensations that may last only a few seconds or linger for several minutes or even longer. Episodes may be isolated or recurrent. Many people have a difficult time articulating what they experience when they say they feel dizzy, because the term encompasses a range of sensations like lightheadedness, wooziness, unsteadiness, or spinning. To help identify the cause, people should first consider whether they are experiencing primarily lightheadedness or vertigo.

A 2024 Harvard study involving more than 84,000 diabetes-free people (average age 62), who were followed for seven years, found those whose sleep duration varied most had a 34% higher risk for diabetes, compared with those whose sleep duration varied the least.

In a 2024 Harvard study involving more than 49,000 women (average age 79), those who reported feeling the most grateful had a 9% lower risk of dying over the following three-year period, compared to those who reported feeling the least grateful.

Even if someone has never gotten the flu or COVID-or at least hasn't gotten very sick from them-there still are good reasons to get vaccines that protect against the viruses. Both the flu and COVID viruses can injure the body, making it vulnerable to new major illnesses such as heart, lung, gastrointestinal, or brain disease. But recent solid evidence has shown that vaccines not only reduce the risk of getting the flu and COVID, but also reduce the risk of developing the serious diseases associated with COVID or flu.

It's easy to feel too busy to be mindful, but everyone can find a few minutes during the day to pause and reflect. Even a brief, regular mindfulness practice provides a respite from the pace and stress of life, and can help with memory, concentration, and focus.

Following celebrities on social media or being a fan of fictional characters can be enjoyable -- though one-sided, these relationships offer a sense of connection. But parasocial relationships also have downsides, especially when people rely on them too much.