It could be the lighting, but you can really see where her hair is thinning on either side of her head.
even skinny ballerinas that put their hair in buns get traction alopecia, it's not because she is 500lbs
As a comparison, this screencap is from a video from 2018, and in this video she weighed in at 480 lbs, which is close enough to where she's claiming to be right now that I feel it's an accurate comparison:
Gotta call bullshit on Amber in this one. She said her cancer is staged at 1b. Then she says she is still waiting for results on the lymph node pathology report. Both can't be true. In fact, I have never heard of a cancer hospital that didn't have the path report before you left post-surgery. You can't stage a cancer without knowing if it has metastisized. So my guess is that in fact, her cx is staged at 1b and her lymph nodes are clear.