Whether or not this helps you lose weight is dependent on your individual digestive system and nutritional needs, what else you're eating through the day, how much exercise you're getting, etc. Now, most almond milk products are very high in sugar, so you might want to check that unless you're making your own, and some people don't do well on dairy products like whey, but assuming none of this is a big problem that's a pretty healthful shake for most people.