A new study says there could be a link between long-term use of melatonin supplements and a risk of heart failure. The study ...

A study found adults using melatonin for over a year had higher risks of heart failure and hospitalization, though some ...

Many experts have questioned the research, saying it's not likely the supplement itself causes a higher risk of heart ...

Adults with chronic insomnia who used melatonin for a year or more were more likely to be diagnosed with and hospitalized for ...

The pineal gland — which regulates the cycles of sleep and waking — appears to have evolved as an indirect way to improve vision, by keeping toxic compounds away from the eye, according to a new ...

WASHINGTON - The long-term use of melatonin supplements, a popular, over-the-counter go-to for sleeplessness, may lead to a ...

This is a preview. Log in through your library . Abstract Exposure to light reduces the ability of the rat pineal gland to synthesize melatonin and decreases the weight of the gland. When the ...

This is a preview. Log in through your library . Abstract The pineal gland of birds contains one or more circadian oscillators that play a major role in overall temporal organization. We have ...

You may have noticed a great deal of discussion on the internet (especially on YouTube) about the nature, function and characteristics of the pineal gland—the latest endocrine gland identified by ...