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Shifting away from diets high in animal products towards more plant predominant diets is recommended by many health organizations to both reduce the negative environmental impacts of animal agriculture and to improve health outcomes. As a result, a number of plant-based meat alternatives such as Beyond Meat have been formulated to promote increased plant consumption. However, evidence is limited on the impact of newer plant-based meat alternatives on common cardiometabolic risk factors. The investigators aim to compare the acute metabolic, gastrointestinal, and inflammatory effects of a plant-based meat alternative (i.e., Beyond Meat) versus a comparable beef product within the context of high-fat, "Western-style" meal (i.e., eggs, meat, refined bread product). The investigators will also examine whether these responses differ based on whether individuals have a normal-weight or have overweight/obesity.
The investigators will recruit individuals with a BMI in the normal (18.5-24.9 kg/m2) or overweight/ obesity (>25.0 kg/m2) ranges from the Ball State University campus and surrounding communities. Each participant will complete two meal trials in a randomized crossover design. At each meal trial, a intravenous catheter will be inserted and baseline blood sample collected. Next, participants will consume a high-fat, Western style meal consisting of eggs cooked in butter, a croissant and either 4 oz of 80% ground beef or 4 oz of Beyond Meat ("Cookout Classic" variety). The Beyond Meat and beef products have nearly identical macronutrient profiles, allowing for examination of the unique properties of the two protein sources. Regardless of primary protein source (beef or Beyond Meat), each meal will contain 980 calories (60g fat). Following completion of each meal, blood samples will also be collected 1-, 2-, 3-, and 4-hours. The investigators will measure metabolic markers (i.e., triglycerides, glucose, HDL-C) immediately upon sample collection using the Piccolo Xpress clinical chemistry analyzer. Additional blood will be collected and stored as serum in order to measure indicators of inflammation (e.g., IL-6) and intestinal permeability (e.g., lipopolysaccharide binding protein) using commercially available ELISAs.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Meal Consumption with Beyond Meat | Experimental | During the Beyond Meat arm, participants will consume a high-fat meal containing Beyond Meat (rather than beef). Meals will be otherwise identical. |
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| Meal Consumption with Beef | Active Comparator | During the Beef arm, participants will consume a high-fat meal containing beef (rather than Beyond Meat). Meals will be otherwise identical. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| High-fat meal containing beef | Other | High-fat meal (eggs cooked in butter, croissant) with 80% ground beef. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Serum interleukin (IL)-6 | The investigators will measure serum IL-6 at baseline and 1-, 2-, 3-, and 4-hours after each meal containing either beef or Beyond Meat. Serum will be banked from each visit and this measurement will take place upon study completion. | Through study completion, up to 1 year. |
| Serum lipopolysaccharide binding protein (LBP) | The investigators will measure serum LBP at baseline and 1-, 2-, 3-, and 4-hours after each meal containing either beef or Beyond Meat. Serum will be banked from each visit and this measurement will take place upon study completion. | Through study completion, up to 1 year. |
| Serum soluble CD14 (sCD14) | The investigators will measure serum sCD14 at baseline and 1-, 2-, 3-, and 4-hours after each meal containing either beef or Beyond Meat. Serum will be banked from each visit and this measurement will take place upon study completion. | Through study completion, up to 1 year. |
| Serum lipopolysaccharide | The investigators will measure serum lipopolysaccharide at baseline and 1-, 2-, 3-, and 4-hours after each meal containing either beef or Beyond Meat. Serum will be banked from each visit and this measurement will take place upon study completion. | Through study completion, up to 1 year. |
| Serum tumor necrosis factor (TNF)-alpha | The investigators will measure serum (TNF)-alpha at baseline and 1-, 2-, 3-, and 4-hours after each meal containing either beef or Beyond Meat. Serum will be banked from each visit and this measurement will take place upon study completion. | Through study completion, up to 1 year. |
| Measure | Description | Time Frame |
|---|---|---|
| Triglycerides | The investigators will measure triglycerides at baseline and 1-, 2-, 3-, and 4-hours after each meal containing either beef or Beyond Meat. These measurements will take place immediately and a complete dataset will be compiled upon study completion. | Through study completion, up to 1 year. |
| Measure | Description | Time Frame |
|---|---|---|
| Body composition | The investigators will measure body composition using bioelectrical impedance (InBody). | Through study completion, up to 1 year. |
| Systolic and diastolic pressure | The investigators will measure blood pressure using an automated cuff (Omron). |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Bryant Keirns, PhD | Contact | 765-285-8356 | bryant.keirns@bsu.edu |
| Name | Affiliation | Role |
|---|---|---|
| Bryant Keirns | Ball State University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Health Professions Building, Ball State University | Recruiting | Muncie | Indiana | 47306 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 40127469 | Derived | Fruit S, Keirns N, Higgins M, Quirk A, Schifferer J, Romanovich O, Yakos A, Osborne K, Trappe S, Keirns BH. Acute effects of a reformulated plant-based meat alternative compared to beef within a high-fat meal on inflammatory and metabolic factors: a randomized crossover trial. Appl Physiol Nutr Metab. 2025 Jan 1;50:1-11. doi: 10.1139/apnm-2024-0498. |
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| ID | Term |
|---|---|
| D050177 | Overweight |
| D009765 | Obesity |
| ID | Term |
|---|---|
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
| D001835 | Body Weight |
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While complete blinding is not possible (participants will see/taste the food they eat), the investigators will not tell participants whether they are consuming beef or Beyond Meat.
| High-fat meal containing Beyond Meat | Other | High-fat meal (eggs cooked in butter, croissant) with Beyond Meat Cookout Classic. |
|
| HDL-C |
The investigators will measure HDL-C at baseline and 1-, 2-, 3-, and 4-hours after each meal containing either beef or Beyond Meat. These measurements will take place immediately and a complete dataset will be compiled upon study completion. |
| Through study completion, up to 1 year. |
| Glucose | The investigators will measure glucose at baseline and 1-, 2-, 3-, and 4-hours after each meal containing either beef or Beyond Meat. These measurements will take place immediately and a complete dataset will be compiled upon study completion. | Through study completion, up to 1 year. |
| Through study completion, up to 1 year. |
| D012816 |
| Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |