Todays Newsbites

Many nutrition studies rely on self-reported dietary intakes. Surveys ask participants to record everything they eat for a specific period, recall what they ate recently, or indicate what foods (in what amounts) they typically eat. The information these surveys provide is used to determine what dietary components or habits are associated with particular health measures or outcomes. If the self-reported diet information is inaccurate, it will impact study results.

A review and analysis published recently in the American Journal of Clinical Nutrition suggested that eating walnuts could improve blood lipid levels (cholesterol and triglycerides) without causing weight gain or increasing blood pressure.

Studies have found that people who routinely dont get enough sleep are more likely to be overweight than people who get adequate sleep. Additionally, two recent cohort studies of middle-aged and older community-dwelling adults have found insufficient sleep to be associated with lower muscle mass. A new study published in Science Advances delved into the reasons why.

According to a recent report from the CDC and federal department of Health and Human Services, only 23 percent of American adults aged 18 to 64 years get the recommended amount of physical activity.

A recent systematic review and meta-analysis published in the journal Circulation: Cardiovascular Quality and Outcomes concluded that multivitamin/mineral (MVM) supplementation does not protect against cardiovascular disease.

As people get older, the body tends to lose muscle mass and strength. This process is called sarcopenia, a term coined by Friedman School professor and former dean Irwin Rosenberg. Sarcopenia can make activities of daily life more difficult and increase risk of falls. A recent study in the journal Clinical Interventions in Aging looked at whether sarcopenia could be a predictor of reduced cognition.

A recent systematic review and meta-analysis of randomized controlled trials published in the journal Clinical Nutrition found that vegetarian-style dietary patterns (from vegan, which omits all animal products, to ovo-lacto-vegetarian, which includes eggs and dairy) may be helpful in diabetes management.

A study published in 2012 found that competitive cyclists performed better on long rides if they consumed either a banana (plus water) or a sports drink, compared to water alone. Now a follow-up study, recently published in the journal PLOS One, concluded that bananas are even better than sports drinks at helping these athletes recover from extreme exertion.

It has been suggested that taking vitamin D supplements could help preserve muscle strength and functionality in older adults, but a new study concluded that supplementation alone had no impact on either muscle strength or physical performance.

A recent study in Proceedings of the National Academy of Sciences of the United States of America suggests that cravings for junk foods not only can undermine good dietary intentions, but also may increase spending on unhealthy choices.