There has been well documented research on the effect of switching to a ketosis based diet and one that is most sited by people with a lack of understanding and objections to low carb diets is the Canadian military study. The Canadian army switched a group of soldiers to a pemmican diet during winter servival exercises and the program was a dismal failure. The resulting fatique left the force unable to maintain fight readiness and the experiment was scrapped after a short duration. The fatique and feelings of hunger are a transient experience that should not last for more than a couple or three weeks. After the transition is complete the feeling is really good. Wait a month and then try some performance test like walking or running. You will be amazed at the differance in energy levels, performance levels, and lack of exercise related pain. That being said. Follow the advice presented previously. Eat more fat! It seems to me that newbies rarely eat enough fat. It is not uncommon for people on this list to supplement our diets with tablespoons of oils (olive, cod liver, fish, coconut, almond). I think that a tablespoon of oil is 9 grams of fat. Correct me if I am wrong! Grains are not going to help the process and may undermine the whole benefit model. That is a foundational element of a paleo diet. Even cheater don't eat grains unless they want to get sick. Even the smallest portion (two or three corn ships) make my joints ache. Wayne >I am now on about day 6, at times feeling very hungry and a little weak and >light-headed. Also feeling a bit like I am de-tox-ing, or maybe tox-ing - >not sure which. I am doing meat, fish, allowed veggies including winter >squash (controversial?), walnuts, some almonds, fresh fruit and a little >dry >fruit. Hard for me to cut out grains. Going without dairy is easier. > >How many days until I feel somewhat straightened out? > >Thanks.