It's often touted by the holistic nutrition pundits that North America is a starving continent. It seems paradoxical that nations that have an out-of-control obesity problem could be said to be suffering from starvation, but there is logic behind the statement. With our nutrient-depleted foods coming from mineral-depleted soils, the over-processing of our foods and the artificial ingredients that replace real ingredients, the Western world is suffering from a starvation of nutrients!

In fact, it's reasonable to assume that this starvation is partially to blame for the obesity epidemic. People who eat nutrient-depleted food need to eat an excessive amount of it in order to satisfy the body's needs (although, it's usually a distended abdomen that stops a person from eating, not a true feeling of satiety). Ultimately, we eat excessive amounts of poor quality food in an effort to compensate for our cravings for nutrients and thus are gaining weight as a result.

A new study from the Journal of Cancer Research, supported by the US National Cancer Institute (NCI), published findings that show promise for the prevention of lung cancer. The study found that folate, multivitamins and green leafy vegetables may reduce the risk of lung cancer in current and former smokers.

The consumption of certain micronutrients may lessen a process called methylation, which has an effect on gene signaling. Since many genes in lung tumors, including those responsible for cell division and other significant cell processes, are methylated, researchers speculated that nutrients decreasing methylation may reduce risk of lung cancer.

The nutrients studied included a multivitamin rich in phytochemicals like vitamin C, carotenoids, lutein, folic acid, vitamin A and vitamin K. Researchers also showed that reduced gene methylation occurred with consumption of these micronutrients as components of green leafy vegetables.

Natasha Turner, N.D. is a Toronto-based naturopathic doctor. She is the founder of the Clear Medicine wellness boutique and author of the bestselling book The Hormone Diet. Each week in her column for That's Fit.ca, Dr. Turner advises readers on how to remedy common health issues as well as improve their overall health.

Have you ever been caught grabbing a bit of shut-eye at your desk? What was your excuse to your boss? New sleep research may be your best answer.

A 2002 study from Harvard University considered worker burnout over four days of training and the effect of napping. As the four days of training wore on, the workers began to experience burnout. But the good news is - the study found that workers who were allowed to take a 30-minute nap on the second day of a four-day training session experienced less decline in visual tasks. A one-hour nap was actually found to return performance back to normal in the last two sessions.

That is not to say that curling up for an hour or so at the office should be sanctioned, but keeping it to less than 30 minutes might not be so far-fetched. It seems that half-hour naps should not only be recognized as acceptable by companies, but also beneficial. This is old news to many European countries where afternoon siestas are standard practice and many shops close for an hour or so each afternoon.

Afternoon drowsiness is a major problem for many corporations: it is estimated that lost productivity costs billions of dollars every year. A possible solution is to allow 20 to 30 minutes of napping per day when it is deemed necessary, creating a work environment that may actually help boost workplace productivity rather than hinder it. In today's fast-paced society and tough economy, however, most companies frown on napping in the workplace rather than encourage it.

Can't squeeze in a nap? Use these nine tips to boost your energy and productivity during the day:

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Specifically, telomere length may set the limit for biological aging. Theoretically, any lifestyle change that affects telomere length also affects longevity. Previous studies have found that telomeres are highly susceptible to oxidative stress. This may explain how multivitamins are affecting the length of telomeres since multivitamin supplements represent a major source of micronutrient antioxidants which curb oxidative stress.