An
HbA1c of 5.7% is right at the start of the prediabetic range, one step up from your earlier 5.3%. It isn't
diabetes, and it's reversible, but a jump this size in a month is unusual from diet alone and is worth looking into further.
Next Steps
Repeat the test in 4 to 6 weeks along with a fasting glucose, since a single reading can shift with stress, illness or diet changes. See a general physician to review both results together before making any lifestyle changes.
Health Tips
Please don't panic over one value. See a doctor to confirm the trend before assuming it's prediabetes for good.