Vitamin D and mental agility in elders

At a time when consumer interest in health-enhancing foods is high, Agricultural Research Service (ARS)-funded scientists have contributed to a limited but growing body of evidence of a link between vitamin D and cognitive function. Cognitive function is measured by...

Jetting off without the jet lag

Everyone hates the jet lag – the nighttime insomnia, loss of appetite, decreased alertness, and depressed mood – that accompanies travel to locations in different time zones. The symptoms of jet lag are caused by misalignment of a person’s internal...