I do a lot of walking to help lose weight. i am thinking of adding idealshape meal replacement shakes. would you recommend this?

Walking & shakes: Meal replacement shakes are fine as long as they are low in carbohydrate and surgar, and high in protein content (at least 20grams of protein). However, more important than the shakes would be exercise. Walking is really not adequate exercise to lose weight. You will really benefit from cardio exercise (treadmill, bike, elliptical) to get your hr up to your target hr. That will make you lose wt.