thetallerpaul said:
Newbie question alert.
Aren't ketones something you don't generally want? I thought they were the by-product of breaking down your own cells for energy not a supply of energy in itself? Or it just my docs get worried if I have them because I need to put weight on not lose it?
I'd have eaten a truck of chocolate if my meter gave me a sniff of an excuse like that. I eat if I see 4 (4.9 still counts!) so well done you for managing it a lot better.
Here you go:
viewtopic.php?f=18&t=28176
Ketones are an alterantive source of fuel for your brain when there is not enough glucose available in your bloodstream to meet its energy needs (about 100g of carb a day for someone eating a regular "balanced diet").
Low-levels of ketones are not a bad thing if you are a T2 (who doesn't need insulin) with good BG control and eating a very low-carb diet. If you have dark ketone colours and your BG control is not good, you need to be very careful, as this is a sign of ketoacidosis (which is a very serious medical condition).
If you are eating less than about 100g of carbohydrate a day then you will be relying on ketones to fuel your brain, to some extent. Below about 50g (and almost certainly below 30g) then some of those ketones will start to spill into your urine and be measurable using ketostix.
Those of us on Very Low Carb Ketogenic Diets use ketosis to reduce our glucose requirement by using ketones to fuel our brain and free fatty acids to fuel our muscles. Even in deep ketosis (say <30g) your brain still needs some glucose to operate, but your liver can easily manufacture enough from fat and protein (gluconeogenesis). Because of this you technically don't need to eat any carbohydrate to carry on functioning properly as long as you consume enough fat and protein, although this is neither practical or necessary.
It isn't for everyone, but some of us get really great results using this approach (in terms of both BG control and weight loss). Basically it's like staying on the Atkins induction diet forever.