A recent report from Medical Economics describes a Mass General Brigham study in which adults who received weekly grocery packages from a clinic food pantry had lower diastolic blood pressure, lower weight and a lower BMI.
The findings appeared in Preventing Chronic Disease. Researchers analyzed health records for 68 adults at the Revere Community Health Center in Massachusetts, who received an average of 97 packages over an average of 2.7 years.
That length matters because most research on food as medicine covers a few weeks or months.
A dietitian designed the packages around the USDA 2020 Dietary Guidelines. Each one held enough food for three meals a day for every person in a household for one week, built around fresh produce, canned beans, nut butter and whole grains.
Patients could pick up a package every week with no end date. The clinic sources the food through a partnership with the Greater Boston Food Bank.
The researchers found a dose-response pattern, meaning the more packages a person received, the larger the change.
Every 100 packages was linked to a 3.21 mmHg drop in diastolic blood pressure, which is the bottom number in a reading. The same amount of food was linked to 2.6 kilograms of weight loss, about 5.7 pounds, and a 1.04-point drop in BMI.
Participants whose blood pressure was elevated at the start also saw their systolic number, the top number, come down.
Hemoglobin A1c, the blood test that reflects average blood sugar over about three months, did not change significantly in this group.
The study compared each person's measures before and after they began receiving food, so it shows an association between the number of packages and the changes. It cannot show that the food caused them. Stating that limit plainly is part of reading any study well.
Dr. Jacob Mirsky, the study's first author and the pantry's medical director, argues that programs should be built for potency: plenty of good food, delivered on a steady schedule, over years.
That is a question of dose, and it is the one health plans and state Medicaid agencies are working through as they decide what to cover. Program designs now range from short-term vouchers to months of home-delivered meals, and there is little agreement on how much food, for how long, moves a clinical number.
Project FoodBox works from the same premise. The program delivers medically tailored produce boxes, designed by registered dietitians, to Medi-Cal members in California and Medicaid members in New York who are managing chronic conditions such as hypertension and diabetes.
In the UC Irvine Health partnership, peer-reviewed findings show an average A1C drop from 8.5% to 7.5% and a 40% reduction in diabetes complication risk. In the program's 2025 member outcomes survey, which is program-reported data with more than 3,000 responses, members ate 1.17 fewer fast-food meals per week (p<.001), and the dietary and well-being gains held through program completion.
These are different programs with different designs, so they sit alongside the Revere results rather than confirming them. What they share is the question of durability: whether regular access to well-chosen food produces changes that last.
Answering it at scale is a logistics problem as much as a clinical one. Project FoodBox has delivered more than 97 million pounds of produce since 2020 and reached more than 5 million people, and that volume depends on a network that connects local producers to the members who need the food.
This study does not say a grocery package replaces medication or the advice of your care team. It says that steady access to well-chosen food was associated with lower numbers over time, which is worth raising at your next appointment.
Ask your clinician or health plan whether food programs are available to you, including medically tailored options through Medi-Cal or Medicaid.
Share this article with a caregiver, clinician or family member who is working to bring their blood pressure down.