vdh2102: People throw around a lot of different numbers in regards to low carb. I consider it to be anything considerably less than what your "normal" amount would be. My "normal" amount, or the amount that a woman my age and size is "supposed" to eat is 210 grams.
I'm epileptic, and to try and help with my disorder, my dr. suggested I go on a ketogenic diet, which is ideally 20 grams of carbs a day. This is practically nothing, and I tended to stick around 50 grams a day. After doing the keto diet for 2 months, my dr. moved me to a more typical low carb diet where I can have 100-ish carbs a day, but twice a week, I try and get my carbs back down around 50.
The medical reasoning behind going low carb, is that when your body isn't burning glucose (energy from carbs) it will burn fat, and fat releases ketones which help brain function. It has been theorized that people used to eat a more meat and veggie based diet, and this helped protect brain function, and now that we are a carbs based society, more cognitive issues have arisen (Not sure if this true or not, but interesting nonetheless).
Everyone's body releases ketones at its own pace, meaning, we each burn glucose at a different rate (based on metabolism) and when that glucose is gone, we each burn fat at a different rate. For me, 50 grams of carbs a day meant pretty consistently losing a 0.5 lbs, to 1 lb every week, pretty much without even trying (though my first week I lost 4 lbs - and I am in the 120's so I lose much slower than I used to). At 100 grams a day, I lose 1 lb about every 2 weeks, or slightly less.
Bumping up exercise = bumping up glucose burning, which means you are able to start burning fat much faster. On a low carb diet, you will start to notice that you look more toned, based on losing fat, and replenishing muscle mass with protein.
My advice is to drink a ton of water, especially at first. Every glucose molecule has 4 water molecules, whereas fat/protein molecules only have 1 or 2, so you will feel thirsty, and possibly a little light headed at first, but that goes away quickly, and with it, your energy should increase, and any headaches, etc. should go away (or seizures for me

).
Eggs are great for low carb. I eat them hardboiled, scrambled, etc. Meat is important - though it took me a while to get used to since I used to not be a big meat eater - and there are tons of recipes out there on how to incorporate it in new and interesting ways.
Foods I would suggest are:
- Eggs
- String Cheese/ or other types of cheese
- coffee/lattes done breve (with half and half, lots of cals but almost no carbs, and quite filling)
- soups made with a chicken stock or beef stock, with vegetables and meet
- avocados (these have some carbs, but not to many, and they are quite filling, and full of healthy fats)
- olive oil
- coconut oil
- nuts
- beans (you have to be careful with beans as they have a decent amoutn of carbs)
- Berries (strawberries, blueberries, raspberries)
- greek yogurt (plain and unsweetened
- cucumbers
- spinach
- turnips
- cauliflower
- broccoli
- Bell peppers (be careful with these though as red/yellow/orange have a bit more carbs)
- crustless cheesecake (made with stevia)
- sugarfree pudding
- pickles
Make sure you eat enough fat - preferably healthy fats found in avocados, olive oil, coconut oil, etc. Because otherwise you can get protein poisoning (often called rabbit flu). And be careful with sweetners (which are often added to "lowfat" or diet foods to make them taste better, and are full of carbs) fruit - which can be high carb due to the natural sugars, and root vegetables (potatoes, carrots, etc.).
There are some great low carb recipes and ideas here:
http://www.genaw.com/lowcarb/recipes.html
Let me know if you have any other questions, and good luck
