Oh Nelie!

Try not to let that

BF reading discourage you! You should be very proud of what you’ve done so far — please don’t let that stupid little machine take away your sense of accomplishment. You KNOW that your scale is down 40 pounds and you’re establishing new exercise and eating habits. Don’t let a number derail you!
I can think of at least three reasons why your BF reading(s) might not have been accurate:
First, to have any kind of accurate BF reading to compare over time, you have to have your BF measured by the same person using the same technique. Otherwise it’s like comparing apples and oranges. You said you had yesterday’s done with a handheld, but what about the first time? If it was with calipers or something else, the numbers just aren’t comparable. And since it was a few years ago, I’m guessing it wasn’t the same person? My opinion is to forget about your old reading and start with the one you got yesterday for comparison purposes as you lose.
Second, those handheld BF analyzers are notoriously inaccurate (as are Tanita scales, which work on the same principle). They send a weak electrical current through your body and, depending on how fast it’s transmitted, decide how much of the tissue is fat and how much is lean body mass. There’s a lot of error depending on how muscular you are, your age, gender, degree of hydration, time of day, if you've eaten etc. I just about had a heart attack the first time I was checked with one of those until I was assured that they tend to underestimate muscle and are biased against the way women carry their fat. With a handheld, I’m consistently about 6-7% higher than with a nine-site calipers reading (which I consider the most accurate). However, they CAN be useful for tracking trends over time, even if the actual reading may be skewed. And they’re very easy to use.
Finally, I’ve read that when we’re over a certain weight or BF % (like 40%), the readings aren’t accurate no matter how they’re taken. There's just too much fat to measure with any kind of precision, unfortunately. My first BF reading came in at 57%

, but it probably wasn’t very accurate — but I still use it as my starting point, for comparison purposes. So it’s possible that both of your BF readings might be wrong simply because of the high percentages. As you lose more weight, you’ll get into the range where it is possible to measure more accurately.
I don’t think that there’s any way that you possibly could have lost 27 pounds of muscle. You’re lifting weights and eating well and if anything, should be preserving muscle mass. If not building it. Like you said, you’re gaining strength and muscle definition, right? Nope, I’m betting that almost every pound of the 40 that you’ve lost has been
F-A-T!!!
Keep up the excellent work, Nelie! You’re definitely on the right track!!
