Originally Answered: Is a diet of smoothies and almonds healthy?
I never recommend any diet that limits food variety. You need the whole food pyramid for a properly balanced diet. Plus you get bored, then when you have a "treat" there is a tendency to go overboard.
With that disclaimer in place, here is a good balance of nutrients by percent of total calories: 45% to 65% carbs, 10% to 35% protein, and 20% to 35% fat (no more than 10% saturated fat and little or no trans fat). 1200 calories per day for healthy weight loss, 1500-1800 per day for weight maintenance (depending on activity level).
You diet may be low on the fats, especially of you are using fat-free dairy in the smoothies. If you don't have enough fat in your diet, your body goes into a "famine mode" and starts consuming muscle tissue instead. This is because fat is needed for the proper operation of your nervous system, so your body conserves it. Reducing saturated fats is a good idea, but don't avoid all fats.
Also, you may be low on insoluble fiber. The fiber in fruits and veggies are soluble, you need whole grains (bran) for insoluble fiber.
All in all, this is healthy. You may need a few educated tweaks.
Good luck in college, and remember, beer has a ton of empty calories!