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Melatonin plays an important role in regulating the body’s natural sleep-wake cycle. The hormone is produced naturally in response to darkness, while synthetic melatonin is often used by people with insomnia.
Alcohol has been part of human culture for thousands of years, but its impact on health remains a topic of debate. Even after centuries of drinking, people still disagree about whether moderate alcohol consumption can have health benefits or whether the risks outweigh any potential advantages. Knowing where the potential risks begin can help you make informed choices about alcohol.
Losing muscle and gaining body fat as we get older is pretty common, but it may have consequences that go beyond strength and mobility. In a new study, researchers looked at the connection between muscle loss, excess body fat, and dementia risk and found some interesting differences. They brought together findings from multiple studies to get a better sense of how these factors may be related.
Watching a lot of TV may be linked to changes in the brain. New research has found that those who watched tv very often had decreased volumes in several brain regions, including areas important for memory and regions connected to Alzheimer’s disease. These findings raise questions about whether heavy TV viewing could contribute to a higher risk of dementia.
Feeling well-rested is one simple way to gauge sleep quality. Physical activity can influence sleep, but researchers are still learning how beginning, maintaining, or giving up regular activity may change how restful sleep feels.
For many of us, darkness at night is becoming harder to find. Streetlights, buildings, electronic devices, and even small lights in the bedroom can keep us exposed to artificial light long after the sun goes down. New research suggests that repeated nighttime light exposure may have effects on the heart, including changes to its structure and how it functions, which could increase the risk of cardiovascular problems over time.
If you're trying to improve your health by walking more, you may not need to focus only on reaching a certain number of steps. A new study suggests that how quickly you walk may matter just as much. Researchers found that both walking more and picking up the pace were linked to a lower risk of death, including death from cardiovascular disease.
The simple choice between an elevator and a staircase could have implications for long-term health. A new review and meta-analysis found that regularly climbing stairs was linked to improved cardiovascular health and a lower risk of dying prematurely.
As we age, it becomes harder to lose body fat without also losing valuable muscle. A new study suggests one type of exercise may offer the best of both worlds. Researchers found that while all forms of exercise helped healthy older adults reduce body fat, only high-intensity interval training (HIIT) preserved lean muscle mass.
We know that obesity can raise the risk of heart disease, type 2 diabetes and other health conditions. And, for years, BMI has been one of the most common ways to assess weight-related health risks. But for older adults, BMI may not provide the full picture. In a new study, an increased waist size was associated with an increased risk of premature death among adults 65 and older.Waist size is a simple way to estimate the amount of visceral fat a person may have.
Millions of people around the world start their day with a cup of coffee. In 2021 alone, approximately 10 billion tons of coffee were consumed globally. With consumption at such a high level, researchers are taking a closer look at how these beverages may affect health. A recent study suggests that how much coffee you drink may influence its benefits, adding to evidence that coffee may have several positive effects on eye health.
Have you ever opened the fridge and found a little patch of mold growing on your fruit or vegetables? Your first thought might be to simply cut off the bad spot and eat the rest. It seems like a reasonable way to avoid wasting food, but new research suggests that may not be enough. Manypeople take this approach, but mold and its toxins can spread beyond what you can see.