Three dozen adults who were all aged 60 or above were asked to take part a range of cognitive tests for the study.

Researchers led by a team based at the National University of Singapore also took MRI scans of the volunteers.

All of the participants, from Singapore, were also asked about how often they drink green, black or oolong tea, as well as coffee.

Ischemic stroke is a condition in which parts of the brain lose their blood supply, causing nerve damage. Once brain tissue suffers irreparable harm, the patient will experience irreversible disability or death, depending on the extent of neuronal loss. However, glial cells surrounding the neurons are activated by the injury and multiply. Now, scientists have found out how to insert genes into glial cells to convert them into neurons, thus filling in for some of the lost functioning cells to improve motor functions.

There are about 86 billion neurons in the brain, but billions of them can be lost with one moderate-sized stroke. About 800,000 new strokes occur each year in the US alone. The need is to regenerate new brain cells to replace the ones that die, at least partially. This is the only known way to restore motor functions that have been impaired or destroyed by a stroke or other brain injury.

Mei Mei Hu vowed to never work with her mother, Chang Yi, but she knew this was bigger than the both of them.

Having a loved one not recognize you, or forget a shared experience can be heartbreaking but that’s what Alzheimer’s does to you. We are, ultimately, nothing but the sum of our memories and experiences, so to lose the ability to remember is to lose one’s identity. Alzheimer’s is currently the sixth-largest cause for death in the United States with over 5.8 million Americans diagnosed with the memory loss disease. After 200 unsuccessful attempts worldwide to find a drug that treats Alzheimer’s, a mother-daughter duo is now close to finding a vaccine, according to Wired.