Low carb diets?

The majority of my diet is carbs and I'm losing weight.

Carbs are not the problem (unless you have a medical condition). Are you going to go low carb for the rest of your life? Successful weight loss comes from making sustainable lifestyle changes.

What do you mean by "low carb"? Are you going to do something like Atkins, or are you just going to limit your carb intake? You can be successful doing either, but if you're really going to do a highly carb-restricted diet like Atkins, you should read up on it first. It involves forcing your body to switch to a metabolic state called "ketosis", in which it uses fat as its primary source of energy. You have to follow some pretty strict guidelines to make this switch happen, and then you have to maintain a very low carb intake to maintain it. It is not very forgiving of cheating. Eat one slice of cake, and you may find that it takes 2-3 days to get back into ketosis. During that period, you will likely feel very tired (this is called the "low-carb flu").

I've done Atkins, and it certainly works if you stay in ketosis, but you've really got to be a meat-lover to do this long-term. On the other hand, if you don't want to go full-blown Atkins, but just want to reduce your carb intake, you can do that by introducing some low-glycemic, slow-digesting carbs to your diet -- things like oatmeal, sweet potatoes, brown rice, beans, etc. There's nothing magical about these foods when it comes to weight loss, but calorie-for-calorie, they will fill you up much more than pizza and potato chips, making it easier to stay under your calorie target.

I do low carb most days. But have one or two carb-up days / week. Easier for me to limit calories by limiting carbs.

No, I like carbs, about 40% of my calories cone from carbs and I am losing bodyfat just fine.

You will lose more 'weight' when you first start a low carb diet, but it's only water.

Wow so since January 31st I lost 55 pounds of water?

I do low carb about 2/3rds of the time.

The other 8 hours a day I eat food .

Worked fine for me.

Even when I was losing 2lb/week, some days I'd have 600g of carbs along with 175g protein and some fat.

Never mind, lol.

I've had great success with low carb diets. I've kept most of the weight off that I lost and am now using it to lose what I gained back over the winter and 30 more.

Low carbing SUCKS and it's such a waste of time really, the moment you don't stick to it all it damn near out the window. Unless the rest of your life will consist of low carb, why not just change your eating to include a health amount of carbs. Personally I dealt with low energy, confusion sometimes, forgetfulness, hard time sleeping sometimes...I'll never do it again, I eat carbs and I'm still dropping so I won't put my body through that when I don't need to.

I can only speak from experience. If you are referring to low carb diets overall, by limiting vegetable sources of carbohydrates AND grain/legume carb intakes then I can tell you from what I realized during my 6 month paleo experiment, is that you will probably lose a lot of weight fast but just like anything else, when you cut down on something your body needs naturally to produce energy, and go back to eating again you will gain most of that weight back in almost as much time if not less then when you took it off.

I lost about 30 lbs in around 6months by eating paleo, but still adding in some carbs here and there (like 80/20). But I HIGHLY recommend you just limit your carb intake to less simple carbohydrates and focus on the complex ones that can produce better energy if you really want to go through with it. So I can honestly say that the paleo diet is a fad that isn't a healthy way to go about your life for weight loss in the long run. Not saying that it doesn't work for some people but it is really un realistic as I don't remember the last time I spent a 36 hour trip tracking down a mammoth to spear it for food, or trekking across a state just to find shelter or a place to settle in with my clan while I drag my club on the ground and pick nuts and berries. But that's just me.

But if you really want to do anything I recommend just spreading out your macros throughout the day and eat about the necessary proportion of carbs/proteins/and fats in each meal and you'll be much happier, and it won't leave as much error for spiking your weight gain when you revert back to eating carbs again.