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.
Earwax traps dust and tiny particles and helps prevent objects from reaching the eardrum. As earwax dries, it moves out of the canal naturally, but sometimes it builds up. Commercial ear drops, hydrogen peroxide, baby oil, and mineral oil can help soften hardened wax for easy removal.
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.
Women who develop health problems such as high blood pressure or diabetes while pregnant face an increased risk of heart disease later in life.
The FDA has approved a new drug called rilonacept (Arcalyst) to specifically treat recurrent pericarditis, a painful inflammation of the fluid-filled sac that surrounds the heart.
Eating one cup of leafy green vegetables a day may help lower heart disease risk. Leafy greens are rich in nitrates, which the body converts to nitric oxide (a compound that helps reduce blood pressure).
Melons have a high water content and are fairly low in calories, making them a good choice for people watching their weight. Watermelon contains lycopene and citrulline, two nutrients thought to benefit heart health.
A buildup of fat inside the liver, known as nonalcoholic fatty liver disease (NAFLD) affects about 25% of adults. This under-recognized condition is closely linked to obesity (especially excess weight around the middle of the body), type 2 diabetes, and cardiovascular disease. People with NAFLD can slow or even reverse the condition with the same lifestyle strategies that improve cardiovascular health: losing weight, adopting a healthy diet, and exercising regularly.
Swimming (or just dunking) in cold water is generally safe. But people with heart rhythm disorders should be cautious about this practice. The evidence for the health benefits for cold-water immersion (which allegedly include fat loss and reduced inflammation) is limited. Submerging the face in cold water triggers the diving reflex, which causes the heart to slow down and blood pressure to rise. This response, in addition to an adrenaline surge from cold water on the skin, may trigger an underlying arrhythmia.
All episodes of fainting results from insufficient blood flow to the brain. But there are many underlying causes for that diminished blood flow, ranging from common, usually harmless issues to rare, potentially serious problems. Common causes include vasovagal syncope and orthostatic hypotension; rare causes include carotid sinus hypersensitivity and rotational vertebral artery syndrome.