You've cut the quote out of context and as such missed what is being said. It might help to rephrase the quoted sentence: when an older patient stops weight-los

You've cut the quote out of context and as such missed what is being said. It might help to rephrase the quoted sentence: when an older patient stops weight-loss treatment, on average they regained the fat, but didn't recover the bone and muscle. The point isn't about what's possible, it's about real outcomes that happened. The older you get, the less your body responds to resistance training.