According to the researchers here in US, people can lose weight with walking especially with pedometer if they go enough. People who are able to make a 20 to 40 minute of walking per day are able to lose small but steady amount of weight.
"The increase in physical activity can be expected to result in health benefits that are independent of weight loss," said Dr. Caroline Richardson, who led the study. "Increasing physical activity reduces the risk of cardiovascular problems, lowers blood pressure and helps dieters maintain lean muscle tissue when they are dieting."
Richardson’s team found that people in all studies lose some weight – about 0.1 pound per week on average. Over the year this weight loss will add up to 2.5 pounds and if one can change their eating habits that can add more pounds to this tally of 2.5 pounds.
In the study, people were able to add 2000 to 4000 steps per day and for an average person, 2000 steps counts to one mile.