March 5th, 2014
09:12 AM ET
Eating a high-protein diet in middle age could increase your risk of diabetes and cancer, according to a study published this week in the journal Cell Metabolism. But don't stay away from meat for too long - the same study showed those over 65 need more protein to reduce their mortality risk.
Insulin-like growth factor 1, or IGF-1, is a protein in your body related to growth and development. Past studies have linked IGF-1 to age-related diseases, including cancer. Mice and humans with higher levels of IGF-1 often have a higher risk of developing these diseases.
Scientists believe protein intake plays a role in IGF-1 activity. Eating less protein, studies have shown, can lead to lower levels of IGF-1 in your body. So theoretically, protein consumption could be directly linked to disease incidence and death. FULL POST
February 24th, 2014
04:01 PM ET
Nearly a third of American adults have high blood pressure, also known as hypertension. Often called the "silent killer" because it provides few warning signs, hypertension increases a patient's risk for heart attack and stroke.
New research suggests eating a vegetarian diet could help combat this deadly disease.
A healthy blood pressure is 120/80 mm HG. Previous studies have shown that each increase of 20/10 mm Hg in that number doubles the patient's risk of cardiovascular disease. But lowering that top number just 5 mm HG can reduce your chances of dying from cardiovascular disease by about 7%. And eating more fruits and vegetables may be a good way to do that, according to the new study, published Monday in the scientific journal JAMA Internal Medicine. FULL POST
February 3rd, 2014
04:01 PM ET
In recent years, sugar - more so than fat - has been receiving the bulk of the blame for our deteriorating health.
Most of us know we consume more sugar than we should. Let's be honest, it's hard not to.
The (new) bad news is that sugar does more damage to our bodies than we originally thought. It was once considered to be just another marker for an unhealthy diet and obesity. Now sugar is considered an independent risk factor for cardiovascular disease, as well as many other chronic diseases, according a study published Monday in JAMA Internal Medicine.
December 5th, 2013
04:01 PM ET
Eating nutritional foods is one of the best ways to reduce obesity. But following a healthy diet isn't always easy, especially for lower socioeconomic groups.
One of the biggest barriers to buying good food is the cost, many experts say. Now researchers at Harvard School of Public Health have put a dollar amount on the price of healthy eating. By reviewing 27 studies on the cost of healthy vs. unhealthy foods, they've estimated the daily cost of eating better. Their results are published in the British Medical Journal.
"Conventional wisdom has been that healthier foods cost more, but it's never been clear if that's actually true or exactly how much more healthier foods might cost," said lead study author Mayuree Rao. "We found that the healthiest diets cost about $1.50 more per day, and that's less than we might have expected."
September 16th, 2013
01:46 PM ET
Efforts to increase healthy habits in American teens may be making an impact, according to a new study. Adolescents are moving more, eating better and watching less TV than they used to, and researchers say obesity rates in this group may finally be stabilizing.
The study results come a little more than a month after the Centers for Disease Control and Prevention announced it was seeing signs of progress in the fight against childhood obesity, especially in low-income families.
In the new study, published Monday in the journal Pediatrics, researchers analyzed data from three sets of students in grades 6 to 10. One set was surveyed during the 2001-2002 school year, another set during the 2005-2006 school year and the third set from the 2009-2010 school year. Researchers asked the students about their daily physical activity, nutrition, breakfast consumption, TV habits, and height and weight. They then compared the answers across the three school years to identify trends in healthy - or unhealthy - behaviors.
August 5th, 2013
01:47 PM ET
There's a strong link between sugary drinks and obesity. Scientific studies have shown that adults who consume more sugar-sweetened beverages tend to have higher body mass indexes, or BMIs, than their water-drinking counterparts.
But until now, this association hadn't been closely examined in kids younger than 5.
The American Academy of Pediatrics recommends that young children avoid all sugar-sweetened beverages. A new study, published in the organization's journal Pediatrics, offers further evidence to support that recommendation.
July 25th, 2013
09:36 AM ET
Skipping breakfast doesn’t mean you’ll consume more calories later in the day, according to a new report from Cornell University.
Researchers split 400 college-age students into two groups; they fed one group breakfast and the other no breakfast. They then tracked their eating habits throughout the day and measured the amount of calories they were consuming.
While the non-breakfast eating group reported feeling hungry by lunchtime, they didn’t consume larger lunches compared to the group who had eaten breakfast. In fact, the breakfast skippers had consumed roughly 400 fewer calories total at the end of the day.
“The problem in our culture is that we consume too many calories, and we have to look around at ways to help us consume less,” says David Levitsky, study author and professor of nutritional sciences and of psychology at Cornell.
“And we found that if you are trying to lose weight, then skipping breakfast isn’t necessarily the worst thing for you to do.”
May 23rd, 2013
06:31 PM ET
Calorie counting has long been touted as an effective tool for losing pounds or maintaining a healthy weight. But new research published in the British Medical Journal shows many of us are underestimating the calories we're eating, especially when we visit fast food restaurants.
Researchers interviewed more than 1,800 adults, 1,100 adolescents and 330 children at several fast food chains in New England. The interviews were done at McDonald's, Burger King, Subway, KFC, Dunkin' Donuts and Wendy's around dinnertime and lunchtime.
Study participants were asked to estimate their meal's calorie count. Researchers then collected the bill to later tally the correct amount of calories using nutrition info posted on the chain's website. FULL POST
February 26th, 2013
10:49 AM ET
You’ve seen it added to cereal boxes, gallons of milk and bottles of orange juice. Experts tout its benefits – from strong bones to a strong immune system – and warn of the dangers of Vitamin D deficiency.
The public relations push is working; between 2002 and 2011, sales of vitamin D supplements increased from $42 million to $605 million, according to the Nutrition Business Journal.
New recommendations from the U.S. Preventative Services Task Force could bump those sales even higher, or - if critics are right - confuse consumers as they head down the pharmacy aisle.
After completing a review of existing research, the USPSTF, an independent panel of doctors and experts in prevention and evidence-based medicine, is advising against taking moderate amounts of Vitamin D and calcium supplements because there is not enough evidence to prove the supplements reduce the risk of bone fractures.
February 21st, 2013
12:01 AM ET
Americans are eating less fast food daily than they used to, according to a new report from the Centers for Disease Control and Prevention. But it's not much less.
Using data from 2007 to 2010, the CDC's National Center for Health Statistics determined adults eat, on average, 11.3% of their daily calories from fast food. That number was 12.8% in 2006– a one and half point difference.
As you would expect, younger adults tend to eat more fast food than seniors. People older than 60 eat approximately 6% of their daily calories from fast food. Among the younger age groups, non-Hispanic black adults eat the most fast food - using more than one-fifth of their daily calories at fast food establishments.
The CDC did not see a significant difference in fast food consumption based on income, according to the report. Only in the 20-to-39 age group did fast food consumption drop as income increased.
Fast food has been linked to the obesity epidemic in the United States. Not surprisingly, obese adults in each age group ate more of their calories from fast food.
About this blog
Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.