I have gained some weight. thyroid test results normal t3 (liothyronine) =1.43, t4=7.22, tsh=2.91ug/ml . but does it indicate low metabolism? do i need any treatment

Diet and exercise: You thyroid test results are normal. Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Reduce you intake of food to control weight.