Five to eight cashews per day are sufficient for good health. This serving size offers a good balance of nutrients without overloading your diet with calories, fat, or potential side effects,” she said, adding that cashews can be consumed in the morning or evening snack time, as roasted or soaked in water. Cashew kernels are considered heart-healthy because they contain monounsaturated fats, which can help reduce the risk of cardiovascular disease. They also provide essential minerals like magnesium, which is important for bone health and muscle function.