I had an A1c of 5 to 5.5 for years. I have been focusing on low fat, slightly lower carb. Then I stopped as much fat as possible to lose more weight faster. My A1c check this year showed 7.4! If I lose body fat, does that cause the liver to kick out more sugar?
Shay
Fats slow the absorption of carbs. When you take too many fats out of your diet - you have all carbs and they are processing faster. This means high sugar spikes after every meal. That causes your A1C to go up.
BTW - the body stores carbs as fat. Eating fat does not make you fat - it is the carbs.
There is always some chance that you would have had a raise in A1C no matter what you did. Some people become a type 2 diabetic no matter how they try to avoid it.
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I did some research for you. Per the source article below "Losing weight is the first step to lowering your A1c." (link 1)
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Remember eating fat doesn't make you fat. Link 2 gives guidelines on what to eat to help lower your A1c and it includes "eating a balanced diet complete with healthy proteins, fats, and carbohydrates".