During the induction period ...
Quote from my "Dr. Atkins' New Diet Revolution" book page # 140
"There are a few people who experience fatigue or light-headedness during their first week doing Atkins. Most often this means that the process is going too fast for their particular metabolism--they're losing weight too fast, losing water and certain minerals too fast and their bodes can't keep pace with these quick changes. One sign is ascent weakness" You feel weak walking UP stairs.....Obviously, drinking lots of water is essential. Usually I advise patients who have these problem to SLOW DOWN the weight loss. They should add another helping of vegetables to their evening meal or one or two ounces of nuts or seeds"
I am on this with total medical supervision for reasons not related to weight, however, my doctor agrees with this information and also advised me to NOT stop my caffiene intake. He thinks that if suffering from caffiene withdrawals you will less likely notice when there is other problems such as loss of potassium which is perhaps the MOST dangerous vitamin or mineral to deplete your body of.
http://www.americanheart.org/present...identifier=331
Of course he insisted that I take a low-iron multi-vitamin and also an additional potassium supplement and I can tell you...I feel much better and have restarted the induction face 7 days ago.
Busywomensfitness.com's info on potassium