What can you eat?  
     
  Fish- including canned tuna, all you want.
Chicken- all you want. White is better but, personally, I only like dark meat.
Pork-  once a week is ok. Bacon once a week (unless its turkey bacon, then twice a week)
Beef- if its extremely lean, 3x a week. If fatty, 1x per week.
Turkey- same as chicken
Sweet potato- ½ potato per serving, 2x a week
Broccoli or asparagus or spinach- 1 cup, 1x a day
Salad- 1 cup, 2x per day (oil and vinegar dressing)
Oatmeal- instant is ok. 1x a day
Sweetners- 1 splenda per day. Stevia, as much as you want.
Whole grain rice- 1/2 cup per day
Low carb protein shake- 1 or 2 per day IF you're still hungry.

Acceptable foods on the keto (low carb) diet (Atkins and South Beach are keto diets or closely related):
All Fish: Tuna, Samon, Sole, Trout, Flounder, Sardines, Herring, Anchovies
All Meat: Beef, Pork, Lamb, Veal, Venison, Ham*, Bacon*
All Fowl: Chicken, Turkey, Duck, Goose, Cornish Hen, Quail, Pheasant
All Shellfish: Oysters, Crabmeat, Shrimp, Lobster, Clams, Squid, Mussels
All Eggs: Scrambled, Fried, Poached, Deviled, Hard-boiled, Soft-boiled, Omelets
 
 

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*Processed meats, such as ham, bacon, pepperoni, salami, hot dogs and other luncheon meats may have added sugar and will contribute carbs. Try to avoid meat and fish products cured with nitrates.

Cheeses: Cheddar, Cream Cheese, Swiss, Mozzarella, Gouda, Goat, Blue Cheeses
Low-Carb Vegetables: Peppers, Mushrooms, Celery, Cucumber, Lettuce, Romaine Lettuce, Radishes, Bok Choy, Parsley
Low-Moderate Carb Vegetables: Artichoke, Asparagus, Snow Peas, Spinach, Broccoli, Spaghetti Squash, Eggplant, Brussel Sprouts, Tomato, Cabbage, Turnips, Onion, Zucchini, Cauliflower
Salad Garnishes: Grated Cheese, Sour Cream, Hard-Boiled Egg, Mushrooms, Bacon, Oil, Vinegar, Full-Fat Salad Dressing
Herbs & Spices: All Spices, Garlic, Basil, Pepper, Dill, Thyme, Oregano, Ginger, Rosemary, Sage
Fats & Oils: Olive Oil, Vegetable Oil, Canola Oil, Walnut Oil, Soybean Oil, Grapeseed Oil, Sesame Oil, Sunflower Oil, Safflower Oil, Butter
Beverages: Filtered, Mineral, Spring, Tap Water, Club Soda, Heavy Cream, Decaf Coffee, Decaf Tea, Herb Tea, Lemon Juice

Unacceptable Foods:

Avoid Sugar: Instead, use artifical sweetners such as sucralose or saccharin

Avoid The Following: Bread, Pasta, Grains, Fruit, Starchy vegetables or Dairy products other than cheese, cream, or butter. Do not eat Margarine or any other foods with hydrogenated oils (trans-fats).

*Do not eat nuts or seeds in large amounts, as they often have too much carbohydrates. Foods that combine protein and carbohydrates, such as chickpeas, kidney beans and other legumes, are not permitted.

Avoid "Low-Fat": Foods that claim to be "reduced-calorie" or "low-fat" are often packed with sugar. Avoid them at all costs.

Avoid Caffeine: Excessive caffeine has been shown to cause low blood sugar, which can make you crave sugar.

There is plenty of other things you can eat, this is just a starter list. Snacks are just going to have carbs. Its better for you to have 3 chicken breasts, 1 pce of fish, lunchmeat, salad and oatmealrather than have a snack.