Stroke Archive

Some people have poor circulation, but if your fingers pale and go numb when exposed to quick changes in temperature, it could be Raynaud's phenomenon, a different kind of circulation problem. Generally, avoiding sudden exposure to cold and other factors that cause blood vessels to constrict, and being prepared with gloves and extra layers of clothing, helps.

The cost of a prescription drug can be very high, and several factors contribute to this. What can consumers do to reduce their drug costs, and what changes need to be made to make medications more affordable?

Young-onset dementia, which occurs in people younger than age 65, is uncommon. A new study has identified 15 factors linked to a higher risk of young-onset dementia.

A 2023 study of 1.5 million people found that those who had uncontrolled high blood pressure or diabetes prior to getting COVID-19 had increased risks for COVID complications (such as hospitalization or being on a ventilator), compared with people whose high blood pressure or diabetes was well controlled.

In a 2023 Harvard Medical School study of more than 216,000 people (followed for up to 36 years), those who reported eating the most red meat had a 62% higher risk of developing diabetes, compared with those who reported eating the least red meat each week.

For the first time, consumers can order a blood screening for Alzheimer's disease. The screening looks for two types of brain proteins, one of which is associated with Alzheimer's. Doctors have concerns about the screening: it's not FDA-approved, there's little information about its accuracy, and it can take a few days to speak with a doctor about the results. By comparison, an official Alzheimer's diagnosis involves a comprehensive evaluation of someone's current and past health problems, physical and neurological exams, family history, blood tests to rule out hidden conditions that might be causing memory problems (such as vitamin B₁₂ deficiency), and imaging tests.

A 2023 study of lab animals suggests that the population of microbes in an individual's gut may influence the risk of developing Alzheimer's disease. Researchers found that healthy lab rats developed signs characteristic of Alzheimer's disease when they were injected with gut microbe samples from people with Alzheimer's. Rats that received samples from the most severely affected Alzheimer's patients developed the greatest brain abnormalities and memory problems. Rats did not develop these problems when they were injected with samples from people who had no signs of the disease.