I did low carb about 10 years ago as I was pre-diabetic and over weight. I lost the pre-diabetes, the weight and blood tests came back to say my good cholesterol was high, bad cholesterol was low.
I've gone back onto low carb recently because, having put weight on over the years even with calorie counting, SW and WW in the intervening years, I felt it works well for me. It's easy - I just eat what I want but pasta, rice, bread, sugar or potatoes off the menu at the moment until the weight is off.
But I have one proviso.
I now know that I can become fixated on any diet. That's why counting calories doesn't work - I'll work out the calories to the final one in everything I eat, WW doesn't work as I start worrying about every point and SW gets me checking every packet of food I buy. I can't live with that sort of obsession or with weighing every bit of food I put in my mouth. It's not healthy and it's not sustainable...for me. Other diets feed into my fear of calories, low carb doesn't. Last time round, unfortunately, I did what a lot of dieters do, lose the weight and then go straight back to the 'old' diet. They (I) forget that it's a change of eating patterns forever. That's why I put the weight back on after SW and WW. I cannot count points or have low fat food for the rest of my life. I can't, it's pants and it feeds my need to control all the time. I need a diet where I just eat the amount I need to feel full.
This time round I'm more relaxed. We went to a friend's a couple of weeks ago - full slap up Sunday lunch with wine, dessert and loads of roast potatoes. Lovely. In the past I'd have panicked about the amount of food. This time I enjoyed it, went back on the diet the next day and have now lost half a stone in a month.
I mentioned this to my sister. She has been low(ish) carb for 25 years, partly due to being gluten intolerant and having coeliac kids so she naturally veers to unprocessed foods. She'll make her own soups and sauces (for example) from scratch, makes her own bread (avoiding gluten) and, sometimes, that means it's lower carbs. She's been a size 8 all that time despite having had two kids in that time. She also has blood tests regularly as our family has history of diabetes. Her cholesterol is also high on the good stuff, low on the bad.
Because she's been doing this for so long she isn't strict keto - more 'lowish' carbs. And she certainly doesn't starve.
So her breakfasts, for example, are never the same each day. She may have some lower carb bread for breakfast (always with butter, never low fat spread) or scrambled egg with tomatoes or mushrooms or Greek yoghurt with fruit. It's as her appetite takes her. She sometimes just has coffee with double cream if she isn't hungry and then she has an early lunch.
She'll have homemade soup for lunch (if she's had bread already she won't have more) or a huge salad for lunch with lots of protein (usually fish or meat - never touches things like quiches or flans because of the gluten) and honey/mustard or ranch dressing or mayo. She'll have a piece of cheese or a piece of apple with peanut butter if she's still peckish mid afternoon because that's filling with just a small piece, then a dinner of protein (skin on chicken for example or fish in a sauce of some kind) with loads of veg and pasta or rice if she hasn't had bread or pasta etc already. Then some darker chocolate or fruit with cream for dessert or a cake that she's made from coconut or almond flour (gluten free) if she wants it. She wouldn't be able to tell you how many calories she's eaten - she hasn't counted calories in over 20 years. If she puts on weight, say after Christmas, she cuts out the carbs and the dessert for a week or two and off it goes. She's in her late 50s now - supposedly a hard time to lose weight - but her body responds to lower carbs very quickly.
So that's my aim when the weight's off. Have potatoes a couple of times a week - who can live without chips forever? Same with bread - love my toast but I also enjoy the low carb breakfasts I have now. Pasta once a week, fine. But I've realised I don't need carbs of that sort every day. My energy levels are better now, I don't fall asleep after Sunday lunch like I always did even on SW or WW. And I'm sleeping like a baby for some reason.
So, yes, low carbing can become obsessive, but so can counting calories (after all you're measuring every bit of food you put in your body) or WW (allocating a point to things) and SW with their syns. I had strawberries and double cream for dessert last night. No idea how many calories and I don't make a note of anything about it anywhere except it was delicious. I also had a low carb curry and a cheese salad with a homemade ranch dressing for lunch. Again, no idea of the calories and I don't weigh anything except me.
When my weight is down I'll reintroduce pasta etc gradually and monitor what works and what doesn't. I'll keep the 'doesn't work' carbs down to a minimum each week as I know I don't need them every day - if I'm not missing them now, why would I need them then?