I am concerned and confused. I have now lost 35lbs, and am almost 2 months post-op. I weight once a week, on Sunday. I have noticed that my FitBit Aria is reporting that my body fat % is still pretty high. Its usually around 43-45%.

Sooooooo.....what am I losing exactly? Just muscle?! Or am I losing both fat and muscle, which would cause the BF% to relatively remain the same?

I don't know what all to tell you, so if you have questions about what I am doing and eating etc....please just ask!

Should I even be concerned with it at this point?

Please and thank you!

Museum-mama

I wouldn't worry about the body fat %, in all honesty. Yes, you're losing muscle, but you're also losing fat. To prevent this, keep exercising and lift weights. It doesn't matter your sex, just lift weights.

When it comes to body fat %, the only ACCURATE way to measure that is through measuring tape or doing the test where you float in Water (I don't remember the name). Most likely your FitBit is using some current to check, which can be thrown off by a lot of factors.

Measure yourself and check your body fat % that way. If it's true you're just losing muscle, which I highly doubt, talk to your surgeon and keep up the Protein and exercise. Hope that helps!

If you want to sanity check the Fitbit, you can use the Navy test.

http://fitness.bizcalcs.com/Calculator.asp?Calc=Body-Fat-Navy

I agree with Will on the float test. It is the absolute most accurate method. It also costs a lot more money than a caliper or tape.