Archive · 21 Jan 2026
Study: Cutting Ultraprocessed Foods Improves Elderly Health
A new study found that older adults who ate less ultraprocessed food, like packaged snacks and ready-to-eat meals, saw big health improvements.
These foods often have lots of additives and are linked to poor health.
In the study, people followed two different diets—one with lean red meat and one vegetarian—for eight weeks each.
Both diets had less than 15% of calories from ultraprocessed foods, which is a big drop from the usual American diet.
The participants didn't have to count calories or change their activity levels.
After eating these healthier diets, they naturally ate fewer calories, lost weight, and saw better insulin sensitivity, healthier cholesterol, less inflammation, and better hormones that control hunger and metabolism.
This shows that cutting back on ultraprocessed foods can help older adults stay healthier, even if they don't make big changes to their diets.
The study was small, so more research is needed to see if these benefits last longer and how people can make these changes in their daily lives.
Older adults who reduced ultraprocessed food intake saw improvements in weight, insulin sensitivity, cholesterol, inflammation, and appetite-regulating hormones.
The study compared two diets—one with lean red meat and one vegetarian—both low in ultraprocessed foods.
Participants naturally consumed fewer calories and lost weight without intentional calorie restriction or increased physical activity.
Ultraprocessed foods make up more than 50% of the typical American diet, linked to obesity and chronic diseases.
The study was designed to reflect real-world eating habits and align with the 2020-2025 Dietary Guidelines for Americans.
- Who
- Older adults (ages 65 and older) in the U.S.
- What
- A study on the health effects of reducing ultraprocessed food intake
- When
- The study was conducted over 8 weeks per diet with 2 weeks of usual diet in between
- Where
- The study was conducted in the U.S.
- Why
- To examine the health effects of reducing ultraprocessed foods while keeping nutrient levels consistent with recommended targets
- Study Participants
- 43 older adults (36 completed)
- Study Duration
- 8 weeks per diet, 2 weeks usual diet
- Ultraprocessed Food Reduction
- Less than 15% of total calories
- Typical American Diet
- More than 50% of calories from ultraprocessed foods
- Health Improvements
- Weight loss, improved insulin sensitivity, healthier cholesterol, reduced inflammation
- Diet Types
- Lean red meat (pork) and vegetarian (milk and eggs)
- Dietary Guidelines
- Aligned with 2020-2025 Dietary Guidelines for Americans
- Study Design
- Controlled feeding study with prepared meals