Feeding your child salmon may prevent obesity later in life. But how? The authors of a study pulished in the International Journal of Obesity, theorize the reason is that increased tissue levels of omega-3 fatty acids [found in abundance in salmon, herring, anchovies and sardines], may prevent antibiotic-induced alteration in gut microbiota [the bacteria in the gastrointestinal tract] and obesity later in life.
"Elevated tissue levels of omega-3 fatty acids significantly reduce body weight gain and the severity of insulin resistance, fatty liver and dyslipidemia [high cholesterol] resulting from early life exposure to ezithromycin [an antibiotic]," said the authors.
These results makes sense to me for at least two reasons:
It's already been established that babies who are breast fed - and breast milk is loaded with probiotics - are less likely to be overweight later in life. Also, probiotics (for instance, found in yogurt) improve the health of the microbiota. So, apparently, an improvement in the microbiota is one reason why probiotics may help manage weight in children through their lifespan. This study showed that probiotics can help undo the harm to the gastrointestinal tract caused by early antibiotic use. Learn more about probiotics and the microbiota...
Omega-3 fatty acids are known for their anti-inflammatory properties. They have been hailed for decreasing heart disease risk, cancer risk, cognitive decline, Alzheimer's Disease -and now - increase of healthy gut bacteria and obesity. Learn more about omega-3 fatty acids...
So eat your salmon - or any fatty fish - to lose weight! The American Heart Association recommends 12 ounces per week.
What is a "healthy" food? Everyone has their own opinion! "We used to believe sugary cereals were fine, as long as they were fortified with certain vitamins and minerals [according to the Food & Drug Administration's definition]," I told Tom Costello, NBC Nightly News Correspondent on the NBC Nightly News on May 11.
But that definition was based on 30-year-old standards when "low fat" was the science of the day. And today, "some of the healthiest foods on the planet are high in fat," I told Costello on The Today Show on May 12.
The FDA sets standards for labels indicating the food's fat, saturated fat, sodium, cholesterol and nutrient content, and whether or not a food qualifies, and can be labeled as: "Healthy." Since nutrition is an evolving science, some of those standards have changed, and the FDA is in the process of revising them.
For instance, when a company produces a product, say, a granola or a snack which contains nuts - which we know today are healthy, but high in fat - the word "healthy" cannot be on the label, as the FDA guidelines have not caught up with today's science that some fats are actually good for you.
But that does not mean that we should trash everything we ever learned about. It is still important to balance our lives with fruits and vegetables, exercise, and keeping our calorie needs in mind. Healthy fats, such as those in nuts, avocadoes, olive oil, salmon, and certain fried foods and dressings, are important, but that isn't a license to binge, or ... to fear and abstain from any foods containing sugar - fruit, 100% fruit juice, sweet vegetables like carrots, milk, and yogurt (even with fruit on the bottom!).
Balance is everyting! Eating sugar-free is just as unhealthy as eating fat-free. Avoiding foods containing any hint of sugar, and even natural sugar, I believe, will be the next diet fad you'll want to avoid!
Some of the most interesting nutrition studies I've read have to do with the prenatal diet and subsequent effects in children. The subject is vast and the outcomes amazing. Did you know that when pregnant moms drink high amounts of carrot juice during pregnancy, their toddlers are more likely to choose carrots over other vegetables? Or, that the more varied a pregnant mom's diet, the more her child will choose and enjoy a wider variety of foods? All proven by science!
So it's no surprise that a new study published in The Lancet found that prenatal fruit consumption is correlated with superior cognition in the mothers' one-year-old infants - though there was no effect if fruit was only fed to the child during the year after birth. So, what may explain this finding?
Evolution may explain, in part, this advantage of fruit-eating. During the neolithic (stone age) period about 12,000 years ago and for thousands of years thereafter, we subsisted mainly on fruits and vegetables; which comprised about 65% of our calories, according to S. Boyd Eaton, from the department of Anthropology at Emory University in an interview and in his essay, "Evolution, Diet and Health." That may mean that brain development is still dependent on the same high level of vitamins, minerals, antioxidants, and other positive nutrients that kind of diet would provide. And this could help explain why, even today, a high fruit diet is correlated with so many positive health benefits: reduced incidence of diabetes, heart disease, cancer, arthritis, eye disease, and other conditions. Keep in mind, too, that the health-giving Mediterranean Diet had 12 to 13 servings of fruits and vegetables daily, and it's known as one of the healthiest diets on the planet.
Fruit is so easy to eat every day, and the local fruit season is just beginning to get exciting. I was most fortunate to receive one of the most delicious dishes I've ever eaten this weekend when my friend and neighbor, Mike Gardner, brought me his salad: