I've seen the untrained individual lose
fat and gain muscle simultaneously.
However, in general it's not going to happen.
Weight training will, however, add in maintaining the muscle you currently have. Where without it there's a chance of losing a good bit of muscle mass (especially if you don't have that much weight to lose).
Also, weight training is a great
energy expenditure. Many think
cardio is great. They don't factor in the "after-burn" that
anaerobic training such as
weights provide.
There are a bunch of benefits coming from weight training that go beyond
fat loss.
