The book of neurogenesis

The brain can continue to produce new neurons as people age, even late into life, through a process called neurogenesis. Right now, scientists are looking at why neurogenesis especially happens in the hippocampus, the region responsible for learning information and storing memories. Animal studies have shown that regular aerobic exercise is associated with an increased production of neurons in the hippocampus. If the same is true in humans, it may be the reason for the observed link between physical activity and maintaining cognitive fitness, and perhaps a lower risk of dementia.

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What are eye floaters?

Eye floaters occur when the thick, jelly-like substance that fills the center of the eye form blobs that block incoming light. They might resemble spots, cobwebs, or strings. The sudden appearance of new floaters should prompt a call to your doctor, but most often they become less bothersome over time.

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Help for erectile dysfunction

Taking erectile dysfunction pills is still the easiest way for most older men to manage their ED. The drugs are more affordable than in the past. But sometimes they don’t provide the help men need, and some men are bothered by side effects, such as headaches, flushing, upset stomach, or dizziness. These individuals may get extra assistance by exploring alternative therapies or devices to help them get and maintain erections.

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Screening for atrial fibrillation: An update

Atrial fibrillation (afib), an often-silent heart rhythm disorder, increases the risk of stroke. Early detection may enable people to start taking anti-clotting drugs to prevent a stroke. Current afib screening methods include asking people about afib symptoms and taking an electrocardiogram during routine check-ups. Wearable devices such as smart watches and fitness trackers can detect afib, but they aren’t yet accurate enough to be used for widespread screening.

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