I joined five years ago and stayed even though my family criticize me all the time for not getting to my goal and wasting my time doing "Sparks". But, I started at 214# and I've never been back there in the past five years. Don't quit. Most everyone who joins Sparks gives up and quits but don't be one of them. You won't get any younger.
I am reading "THE SUGAR FIX" by Richard Johnson M.D. and have listened to his lectures on YouTube. He talks about METABOLIC SYNDROME/Insulin Resistance which most of us over 40 have. Also, watch the series on YouTube with Robert Lustig M.D. "THE SKINNY ON OBESITY" and listen to his lecture "SUGAR: the bitter truth." We have to educate ourselves. www.youtube.com/watch?v=h0zD1gj0pXk