Due to the fact you are extremely underweight and you need to gain weight slowly, recommend a Heart Healthy diet which means a moderate fat diet to increase ‘good’ fats to benefit your body. Moderate fat
diet means = use polyunsaturated (
omega 3, corn oil, nuts, etc) fats and monounsaturated (olive oil, canola oil, peanut oil, etc) fats, no saturated fats (high fat snack foods, butter, fat spreads) and no trans fats.