ketosis simply means you are using ketones (the byproduct of fat burning) for fuel...they can be put through glucogenesis similar to the way protein and fat can - very ineffeicently - unlike carbs which are an easy, efficent way to get fuel.
If you want to go low carb - it's fine to do and can actually be good for your health if you do it right then do a timed carb thing to come off of it - then take your carbs up to the right level for your body when you reach your goal - using better choices than the ones that made you gain fat in the first place.
I lost 160lbs of fat doing this...my food choices were fish cooked with extra olive oil, chicken cooked with extra olive oil, and beef. For my veggies I ate a minimum of 6 cups of green things every day - those who say you only need 3 are mistaken that isn't enough for good health. Choose foods like spinach (well cooked given recent events), kale, asparagus, broccoli, green beans, lettuce, cauliflower, even tomatoes are fine if you can burn fat on them (some can, some can't).
Make sure you take a fiber suppliment every night before bed and possibly every morning upon waking - depending of course on your personal need.
If you have enough fat stores on your body, you can even gain muscle while doing "low carb". Remember your fat offers 9 muscle building calories/gram of fuel for your workouts. However, when your body fat gets too low, you will lose muscle instead of fat - then it's time to change things around a little before that happens.
Here's what I do and this isn't scientific, it's just based on my personal experience of what has helped me change from a 300lb fatbody to a 200lb 9%BF person that actually appears human instead of looking like Jabba the Hutt.
You see it's time to cut - give youself 3 months so you don't have to cut calories too much...longer if you have more fat to lose.
Month 1 - timed carb diet:
Bodyweight X 10 = calories. Make 4 meals 60% fat 30% protein, get the rest in the form of green veggies.
Add to this - a preworkout protein/carb shake.
Month 2 - drop the pre/post shakes recalculate your food needs using the same formula and spread it over 6 meals, making sure you get your green veggies.
Month 3 - same thing.
Month 4 - week 1 - you should be in single digits body fat by now (if you started at less than 20%, time to come off of it. Simply add a pre/post workout protein/carb shake and have your 4 meals (based on your new measurements) the same as before.
Month 4 - week 2 - reduce fat and add carbs to one whole food meal.
Month 4 - week 3 - reduce fat and add carbs to another whole food meal
Month 4 - week 4 - reduce fat and add c arbs to another whole food meal.
Personally, I prefer to keep fat in my final meal for the day - that way I get a steak and baked potato before bed and don't get hungry during the night.
Good luck making it work for you. It did for me, and does for me. It may work for you or may kill you - each body is different. If you have medical issues, see a doctor before doing anything like this.
I did cure all of my DMII symptoms, lower my cholesterol and cardiovascular risk, lose fat, gain muscle, and become a generally healthy person by doing this.
