Eating nuts caused tooth decay in hunter-gatherers - study

WASHINGTON DC - Eating nuts and acorns may have helped hunter-gatherers survive 15,000 years ago in northern Africa but the practice wreaked havoc on their teeth, researchers said Monday.

Fermented carbohydrates in the nuts caused cavities, tooth decay, and bad breath, said the study led by British scientists in the Proceedings of the National Academy of Sciences, a US journal.

The findings offer the earliest evidence of nut harvesting and storage among African hunter-gatherers, and are based on dozens of hole-riddled dental remains found in Morocco's Taforalt Cave.

Dental woes have long been believed to originate in later farming cultures some 10,000 years ago, when people began eating processed foods on a wide scale.

Toothaches were presumed rare among hunter-gatherers. But this research suggests they arose earlier than previously thought by several thousand years.

The study pointed to an "exceptionally high prevalence of caries," or dental disease, found in 51 percent of teeth among the adult remains.

That is far higher than the rate of tooth decay generally seen in hunter-gatherers, which has ranged from zero to 14 percent, and much closer to the level seen in prehistoric farmers, said the study.

"The majority of the people's mouths were affected by both cavities in the teeth and abscesses," said co-author Isabelle DeGroote of Liverpool John Moores University.

"They would have suffered from frequent tooth ache and bad breath."

The latest analysis was done on a total of 52 adults whose remains were found in the 1950s as well as during more recent excavations that were begun in 2003.

Scientists used accelerator mass spectrometry to date the remains and potent microscopes to identify the fossils of plant material which included acorns, pine nuts, juniper berries, pistachios, and wild oats.

There were so many remnants of acorns that researchers came to the conclusion that they must have been harvested and stored for eating as a staple food all year long.

Long esparto grasses were also identified in the excavation, and were likely used to weave baskets for carrying nuts, storing them and even cooking them, the study said.

"This is the first time we have documented this set of behaviors in the Iberomaurusian," a distant culture that thrived in the Maghreb, said lead author Louise Humphrey of The Natural History Museum of London, in an email to AFP.

"It is the earliest documented evidence of systematic exploitation of wild plant resources in hunter-gatherers from Africa."

Iberomaurusian people inhabited Taforalt some 13,000 to 15,000 years ago.

They are described as "complex hunter-gatherers" who performed elaborate burials of their dead, used grindstones to prepare food and engaged in harvesting and storage of wild nuts, the study said.

 source: interaksyon.com

Why your smile prefers water over soft drinks

HERE are some interesting stats about soft drinks:

• The average soft drink serving size has tripled since the 1950s.

• The average person drinks about 45 gallons of soda per year.

• Seven percent of adults drink four servings or more per day.

• At least 20 percent of children drink four servings or more per day.

Soft drinks are loaded with sugar and empty calories. Consumption has been linked to obesity, diabetes, and heart problems.

But of major concern to us, as your lifelong oral health partner, is that sugary, carbonated drinks really bully your teeth!






1. The acids eat away at your tooth enamel

Your tooth enamel is strong—the hardest substance in your body, in fact. But the phosphoric acid and citric acid in soft drinks (ironic name for sodas, isn’t it?) is stronger.

2. Carbonated sugar is replacing calcium-rich milk

In 1966, Americans drank more milk (33 gallons/year) than soft drinks (20 gallons/year). Contrast that with 2010, when the average American drank 45 gallons of soft drinks and only 20 gallons of milk.

3. Diet isn’t really better

You can remove sugar from the equation, but the acid is still there! In fact, many sugar-free soft drinks are more acidic than high-sugar ones.

Root beer may be the safest soft drink for your teeth, even though it’s loaded with sugar. Why? Because it’s comparatively low in acid.

4. Constant sipping creates a constant war zone

Every time you take a sip of a Coke, your mouth becomes an acid-attack zone. It takes your mouth up to 30 minutes to rebalance and create a safe zone for your teeth again. Until then, your teeth ARE losing protective substance, leaving them more vulnerable to cavities, and sensitivity.

5. It’s a dessert disguised as a beverage

Don’t believe us? Here’s the math:

One 12 oz can of Coke (the smallest serving available) has 39 grams of sugar, which is more than:

• 3 snack packs of Chips Ahoy

• 2 servings of frozen yogurt

• A whole slice of apple pie WITH ice cream on top.

So, minimize the damage by:

1. Drinking less! Replace soft drinks with milk, water, even juice.

2. Drinking it all at once, instead of sipping all day.

3. Swishing it down with water to clear away the sugar and acidity.

source: asianjournal.com

Dental care from (before) Day 1

PREGNANCY and its related hormonal changes exaggerate the effects from plaque irritants. And as you know, the acids in plaque can lead to tooth decay, gum tissue inflammation and, if neglected, eventual tooth loss.  A healthy diet, daily tooth brushing and flossing, and a continued – even increased – schedule of regular dental hygiene visits are especially important for pregnant women. Please advise us if you are expecting, before your dental appointment commences.

Once baby arrives, you will need advice on dental care for his or her gums and primary teeth.

Believe it or not, research reveals that cavities are contagious, especially for babies and younger children! Children can develop tooth decay from being exposed to certain bacteria passed on from their parents. The transmission can come from sharing utensils, or any other activity that might transmit even a minute particle of saliva transferred from one mouth to another. By keeping their own teeth clean, healthy and free of decay, parents can help reduce their children’s exposure to decay-causing bacteria, and therefore reduce the chances of cavities in their children’s early years.

At the other end of the dental spectrum are seniors, and their specific dental needs.

Seniors are living longer than ever and, happily, preserving their natural teeth longer than previous generations, too. The inevitable inconvenience of tooth loss in senior years is fading, as seniors today are recognizing that vigilant oral hygiene combats age-related tooth loss.

The understanding that tooth loss is due to oral disease, rather than the result of how many years the teeth have been in service, is an enlightening moment for many.

In addition to regular dental cleanings and checkups, open communication is also part of the long-term oral health formula for seniors. Many people require more medications as they age. The downside to some medications is their side effects on dental health.

It’s important that patients keep the dentist informed on their health conditions, and any medications they are on. For example, many medications cause a decrease in the saliva flow, which can lead to a dry mouth, subsequent dental decay – often showing up in the roots of teeth where the gums have receded to expose them – and possible tooth loss. It is imperative that dentists keep patients’ medical records updated – not only can this help explain some of the dental problems a patient may experience, it can also prevent potentially harmful drug interactions within the dental office.

There are different dental considerations, at every stage of life. Only with consistent daily dental care and regularly scheduled continuing care dental appointments, can we improve our chances of healthy smiles right into our twilight years.

source: asianjournal.com