Things to be cautious about when using MFP?

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There is no question that MFP is an amazing free tool. But I'm just wondering what you would advise a relative newbee to be cautious about. I have noticed two things already:

1. I have looked at verified foods a few times and not one of the ones I looked at has been completely accurate, so I don't plan to rely on the verified label at all when logging.

2. I think it rounds up sometimes. Like if you know your product has 0.5 g of saturated fat, I think it will round it up to 1 gram even though it lets you enter 0.5 when you are creating the food. It seems like that would be a distinction with a difference, particularly when you are watching macros. But there's no way around that one, right?

Anything else that anyone would advise being cautious about? I have no expectation of perfection in this incredible website. I just want to be an informed user of it.

Thanks!

xox

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