I've never been hungry on keto, but I tend to eat 4, 5 even 6 meals a day most days... On days where I have fewer meals they're higher in calories.

Generally speaking if you're getting enough fat and protein it's hard to be hungry. What ratio are you following?

When working toward keto-adaptation for fat-loss I typically recommend 75/20/5 for Fat/Protein/Carbohydrate percentages...

Typically I eat around 70/25/5 myself, since I've been in keto so long. Some days my carb percentage is a little higher, and something else a little lower, but that's usually a very high exercise day.

Don't worry about restricting calories when you first start ... it's sometimes best to just plan to eat around your TDEE, keep your carb intake around 20-30g and have your fat intake around 75% of your calories with the rest being protein. That will typically keep you feeling satiated.

Once you're in ketosis and starting the process of becoming keto-adapted, you can look at starting to calorie-restrict and/or add in exercise - strength training is my favorite while ketogenic as it helps retain lean muscle mass.

It's normal to feel hungry, you're at a calorie deficit! You'll adapt.

Upping protein could help with satiety as it takes the body longer to digest. Couldn't hurt (unless you go over your goal).

Of course you were hungry 3-4 hours after your breakfast. That would be expected regardless of what you ate. The ratio of 5/25/70 is excellent. Well done. Don't cut back on fat. You can even go higher on fat if you want. Don't worry about calories for a couple of weeks. Just eat until you are satisfied and don't let yourself get too hungry. The amount of food you eat will naturally decrease in a couple of weeks and then you can start looking at calories if you want.

Everyone has given you great responses. The following comes from my doc and a few books i've read recently ("The Rosedale Diet "and "The art and science of low carb living"). The body requires a bit more protein during the keto-adaptation phase which can last around 3 weeks. Then you can pare down protein to an optimal level (what your body would need at it's ideal weight) so that you don't get the unwanted sugar, which excess protein gets converted to.

The goal is to not only get into ketosis (this can happen in the first week if you keep carbs at an all-time low) but to get into a keto-adapted state, so that the majority of your body cells will switch to fat burning, and your ketones will continue to rise into the .5-3.0 range (detectable with a blood test). Just because you are in ketosis, the withdrawal may not be over until most cells are cooperating. Since the brain controls most of your hunger, if it is getting low on energy available to it (i.e. not enough sugar or fat .. it can burn both), then it will complain loudly and might be hard to resist, don't get to this point! Feed it often the first 3 weeks so you are satiated. Like they said above, the extra calories will be negligible compared to the possible danger you will ditch the diet due to hunger. The most effective calories to consume when hungry, to get you deeper into ketosis is...Fat. Crazy but true. Use it whenever possible, as it will help you get through the withdrawal and into keto-adaptation the fastest. Vegetables are nice but they have carbs and may not do the job at "filling you up" if it's your blood sugar that is out of balance. Fat and Protein will do that better the first 3 weeks. My doc says 70/20/10 the first few weeks (although I needed more of 70/25/5 to get there). Since keto-adaptation i've been at around 80/15/5 with no hunger and steady weight loss. By all means, add vegetables if you can and definitely add them as much as you want once keto-adapted, but don't skimp on the fat and protein in the first 3 weeks, even if your weight doesn't seem to be coming off. Once you get keto-adapted...it will!

Please have enough extra sodium to keep you from feeling weak (unless your blood pressure says otherwise) since this diet is very diuretic and the kidneys excrete much more sodium than on a sugar-burning plan. This continues long-term after keto-adaptation as well.

I'm a struggling carreer low-fat dieter who's had frequent forays into low-carb which I loved but couldn't stick to. Always regained. High fat has changed things so dramatically for me. I've felt an incredible relief. Hope you get to the "other side" soon! It's so great.