Affordable and ubiquitous, gyudon beef-on-rice bowls are a go-to dish for many broke college students and busy businessmen. Those who hesitate are those who think the brown slivers of beef look unhealthy.

Gyudon chain giant Yoshinoya Holdings Co. is trying to allay concerns about the nutritional value of its dishes, on Wednesday releasing the findings of a study of people who ate gyudon once a day for an extended period.

Commissioned by Yoshinoya, the experiment found that eating gyudon beef daily for three months did not raise the risk of developing lifestyle diseases.