Archive · 18 Dec 2025
Study: Food Environment Shapes Dietary Habits in LA
A new study looked at how easy or hard it is for people to eat healthy in different neighborhoods in Los Angeles.
The researchers created virtual people to see if they would follow a healthy diet called MED-DASH or stick to the usual American diet.
They found that people in wealthier areas were more likely to follow the healthy diet.
When they made healthy food cheaper, more people in all areas chose to eat better.
The study shows that where you live and how much healthy food costs can make a big difference in what you eat.
Experts say doctors and nutrition programs should think about these things when giving diet advice.
Study found varying adherence to MED-DASH diet across different income-level neighborhoods in LA.
Lower-income neighborhood had 57.43% adherence, middle-income 62.39%, and higher-income 68.02%.
Reducing MED-DASH food prices by 50% increased adherence by 17.24% in lower-income, 10.36% in middle-income, and 1.88% in higher-income areas.
Researchers used geospatially explicit agent-based models to simulate dietary adherence.
Experts recommend considering local food environments in dietary guidance and interventions.
- Who
- Researchers led by Jessie Heneghan and Kayla de la Haye
- What
- Study on dietary adherence in different LA neighborhoods
- When
- Recently published in Health & Place
- Where
- Los Angeles, California
- Why
- To understand how food environment affects dietary choices
- Study Focus
- Adherence to MED-DASH vs. TAD in different LA neighborhoods
- Neighborhoods Studied
- Boyle Heights (lower-income), Inglewood (middle-income), Santa Monica (higher-income)
- Average Adherence to MED-DASH
- 57.43% (lower-income), 62.39% (middle-income), 68.02% (higher-income)
- Price Reduction Impact
- 50% price decrease increased adherence by 17.24%, 10.36%, 1.88% respectively
- Lead Author
- Jessie Heneghan, PHICOR Senior Analyst
- Co-Author
- Kayla de la Haye, USC Food Systems Institute Director
- Journal
- Health & Place
- Key Finding
- Food environment significantly influences dietary choices