Hi Ive had a hypothyroid condition for 15 years, taking levothyroxine. Three days after starting Atkins came home from work very tired, slept for couple hours. The next day and every day since, I have experienced alot more energy. I lost the weight fairly quickly.Todate have lost 27lbs and are responsible for 12 other people low-carbing with great success. Got a check up from my doc after low carbing for 8 weeks, all bloodwork was better. He never mentioned anything about needing more carbs. Good luck