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What you eat can influence how you sleep

A new study found that eating less fiber, more saturated fat and more sugar is associated with lighter, less restorative, and more disrupted sleep.

Results show that greater fiber intake predicted more time spent in the stage of deep, slow wave sleep. In contrast, a higher percentage of energy from saturated fat predicted less slow wave sleep. Greater sugar intake also was associated with more arousals from sleep.

"Our main finding was that diet quality influenced sleep quality," said principal investigator Marie-Pierre St-Onge, PhD assistant professor. "It was most surprising that a single day of greater fat intake and lower fiber could influence sleep parameters."

"This study emphasizes the fact that diet and sleep are interwoven in the fabric of a healthy lifestyle," said Dr. Nathaniel Watson. "For optimal health it is important to make lifestyle choices that promote healthy sleep, such as eating a nutritious diet and exercising regularly."

Liberia to be declared Ebola-free, ending world outbreak

Liberia is to be declared Ebola-free by the World Health Organization (WHO), effectively putting an end to the world's worst outbreak of the disease.

The "end of active transmission" will be declared, after 42 days without a new case in Liberia, according to BBC.

It joins Guinea and Sierra Leone, which earned the status last year.

However, UN chief Ban Ki-moon has warned that West Africa may see flare-ups of the virus. It has killed more than 11,000 people since December 2013.

Light exposure and kids' weight: Is there a link?

A world study revealing light exposure plays a role in the weight of preschool children.

Cassandra Pattinson and colleagues Simon Smith, Alicia Allan, Sally Staton and Karen Thorpe studied children aged three to five. At time 1, they measured children's sleep, activity and light exposure for a two week period, along with height and weight to calculate their BMI, then followed up 12-months later

"At time 1, we found moderate intensity light exposure earlier in the day was associated with increased body mass index (BMI) while children who received their biggest dose of light -- outdoors and indoors -- in the afternoon were slimmer," said Ms Pattinson of the Environmental Light Exposure is Associated with Increased Body Mass in Children study.

"At follow-up, children who had more total light exposure at Time 1 had higher body mass 12 months later. Light had a significant impact on weight even after we accounted for Time 1 body weight, sleep, and activity.

How much sugar should we eat?

The World Health Organization (WHO) has issued new guidelines suggesting that cutting the amount of sugar we eat from the current recommended limit of 10% of daily energy intake to 5% would be beneficial.

That's about 25g (around six teaspoons) for an adult of normal weight every day.

To put this in context a typical can of fizzy drink contains about nine teaspoons of sugar.

The limits would apply to all sugars added to food, as well as sugar naturally present in honey, syrups, fruit juices and fruit concentrates.

Dental care in England 'Third World'

Standards of NHS dental care in England have been likened to a "Third World" service, by dentists.

The care, already "unfit for purpose", is becoming even worse, a letter signed by 400 dentists, in the Daily Telegraph newspaper, adds.

It says the creation by international charity Dentaid of a service for vulnerable patients in West Yorkshire is a sign of the mounting problems,according to BBC.

NHS England said services were improving.