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Home NEWS Science News Health

Healthy diet helps older men maintain physical function

Bioengineer by Bioengineer
April 8, 2019
in Health
Reading Time: 3 mins read
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Healthier diet pattern associated with 25 percent lower likelihood of developing physical impairment with aging

Boston, MA — A person’s ability to maintain independence and to physically care for themselves is an essential part of healthy aging. But few studies have examined how a person’s diet may allow some aging people to maintain physical function — basic everyday tasks like bathing, getting dressed, carrying groceries or walking up a flight of stairs — while others’ abilities diminish. A new study by investigators from Brigham and Women’s Hospital examines the role of a healthy diet and finds that this highly modifiable factor can have a large influence on maintaining physical function, lowering the likelihood of developing physical impairment by approximately 25 percent. The team’s findings are published in the Journal of Nutrition, Health and Aging.

“Diet can have specific effects on our health and can also affect our wellbeing and physical independence as we get older,” said senior author Francine Grodstein, ScD, of the Channing Division for Network Medicine at the Brigham. “What excites me about our findings is the notion that we have some influence over our physical independence as we get older. Even if people can’t completely change their diet, there are some relatively simple dietary changes people can make that may influence their ability to maintain physical function, such as eating more vegetables and nuts.”

Grodstein and her colleague Kaitlin Hagan, ScD, MPH, a former postdoctoral fellow at the Brigham, examined data from a total of 12,658 men from the Health Professionals Follow-Up Study, tracking them from 2008 to 2012. At the beginning of this period, all men were assessed for their ability to perform such activities as bathing/dressing themselves, walking one block, walking several blocks, walking more than one mile, bending/kneeling, climbing one flight of stairs, climbing several flights of stairs, lifting groceries, moderate activities, and vigorous activities. The men also filled out a food frequency questionnaire with responses ranging from “never or less than once per month” to “six or more times per day.”

The team used criteria from the Alternate Healthy Eating Index-2010 to assess the quality of each of the men’s diets and assign an individual score. These criteria included six food categories for which higher intake is better (vegetables, fruit, whole grains, nuts and legumes, long-chain omega-3 fatty acids and polyunsaturated fatty acids); one food category for which moderate intake is better (alcohol), and four categories for which lower intake is better (sugar-sweetened beverages and fruit juice, red and processed meats, trans fatty acids and sodium).

Grodstein and Hagan found that higher diet scores (meaning better diet quality) were strongly associated with decreased odds of physical impairment, including a 25 percent lower likelihood of developing impairment in physical function with aging. An overall healthy diet pattern was more strongly associated with better physical function than an individual component or food. But the team did see that greater intake of vegetables, nuts, and lower intake of red or processed meats and sugar-sweetened beverages each modestly lowered risk of impairment.

The study’s results largely align with findings from similar studies of women in the Nurses’ Health Study. Like many studies of diet, the current study relies on self-reporting and answers from questionnaires, which has some flaws. However, since the study examines overall healthy eating, minor discrepancies are unlikely to have had a large impact on the findings. The team’s prospective design — following initially healthy adults who could perform physical activities as they aged — strengthened their study and minimized the likelihood of reverse causation bias (or changing one’s diet due to physical impairment).

###

This work was supported by grants UM1 CA167552, and T32 HL098048 from the National Institute of Health. Grodstein received unrestricted research awards from the California Walnut Commission and Nestle Waters LLC.

Brigham Health, a global leader in creating a healthier world, consists of Brigham and Women’s Hospital, Brigham and Women’s Faulkner Hospital, the Brigham and Women’s Physicians Organization and many related facilities and programs. With more than 1,000 inpatient beds, approximately 60,000 inpatient stays and 1.7 million outpatient encounters annually, Brigham Health’s 1,200 physicians provide expert care in virtually every medical and surgical specialty to patients locally, regionally and around the world. An international leader in basic, clinical and translational research, Brigham Health has nearly 5,000 scientists, including physician-investigators, renowned biomedical researchers and faculty supported by over $700 million in funding. The Brigham’s medical preeminence dates back to 1832, and now, with 19,000 employees, that rich history is the foundation for its commitment to research, innovation, and community. Boston-based Brigham and Women’s Hospital is a teaching affiliate of Harvard Medical School and dedicated to educating and training the next generation of health care professionals. For more information, resources, and to follow us on social media, please visit brighamandwomens.org.

Media Contact
Elaine St Peter
[email protected]
http://dx.doi.org/10.1007/s12603-019-1185-y

Tags: AgingDiet/Body WeightMedicine/HealthNutrition/Nutrients
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