Drinking orange juice could slash your risk of dementia by 50 per cent as it protects the brain, study finds

Drinking a glass of orange juice every day could significantly lower your risk of getting dementia, a study suggests.

Researchers tracked almost 28,000 men for two decades to examine how their fruit and vegetable consumption affected their brain power, according to Daily Mail.

They found men who drank a small glass of orange juice were 47 per cent less likely to have difficulty remembering, following instructions or navigating familiar areas.

Lapses in memory, understanding and episodes of confusion can be early signs of brain decline which can ultimately lead to life-threatening dementia.

Brushing your teeth lowers your risk of hypertension

Women with poor dental hygiene are 20% more likely to develop high blood pressure

Brushing your teeth could stave off high blood pressure, according to new research.

A study of more than 36,500 older women found those who had lost teeth were 20 percent more likely to develop the condition according to Daily Mail.

Improving dental hygiene may reduce the risk of a serious disorder that affects over a quarter of adults, say scientists.

It can lead to heart attacks, strokes, dementia and other potentially fatal illnesses.

One possible explanation for the link is as people lose teeth they may change their diets to softer and more processed foods, so they chew less and have decreased blood flow.

Losing just two hours of sleep makes you ANGRIER

Losing just two hours of sleep each night can make you angrier, a new study has revealed.

It is the first time a direct link has been proven between irritability and lack of shut-eye, according to psychologists.

Evidence already exists to show sleep loss can worsen anxiety and sadness, and derail happiness and enthusiasm, according to Daily Mail.

However, researchers at Iowa State University wanted to confirm the link between between lack of sleep and anger.

Researchers wanted to discover if sleep loss is to blame for anger, or if anger is responsible for disrupted sleep.

The study split 42 participants into two groups. 

Why you can't listen to two people speak at once: Our brains have a 'bottleneck' for speech perception

If you struggle to keep track of more than one conversation at a dinner party, you're not alone.

Scientists now suspect it is physically impossible to pay attention to more than one person speaking at once, according to Daily Mail.

Researchers from the University of Maryland came to this conclusion after scanning 28 people's brains in a 'cocktail party' scenario as they listened to two speakers. Their brains kicked in as normal to listen to the first speaker, but appeared not even to recognise the second person's speech as words.

The findings provide an explanation for why it may be so hard to concentrate on a family member's conversation when the television is on, or to follow what someone is saying in a crowded room.

Why screen time can disrupt sleep

For most, the time spent staring at screens -- on computers, phones, iPads -- constitutes many hours and can often disrupt sleep. Now, Salk Institute researchers have pinpointed how certain cells in the eye process ambient light and reset our internal clocks, the daily cycles of physiological processes known as the circadian rhythm. When these cells are exposed to artificial light late into the night, our internal clocks can get confused, resulting in a host of health issues, according to Science Daily.