Walnuts Are Good For Gut & Heart Health, New Study Finds

The study included 42 participants, between 30 and 65 years old, who were overweight or obese. Participants were assigned to three different diets, which they followed for six weeks. One diet included whole walnuts and the other two excluded them but maintained the same level of nutritional value from different sources. Each diet used walnuts or vegetable oil to replace saturated fats.