Thank you much Rosie. I'm trying to convince her not to worry about it and just ride for fun and try and kick a$$ on the group rides but I think she is pretty focused on losing weight. She is at 113lbs +/-2lbs and 5'01". We have a pretty nice body fat monitor (tanita bc558) and she watches it like a hawk. I would like to hide it during the summer but we use it to watch hydration levels also. I have found that trying to lose weight by dieting and trying gain power on the bike is not good in the summer when we are riding with others. I tried fat burning gels back in 2001-2002 like cutting gel with no luck. Have they improved since then?
No worries
If she's not a competitive cyclist, then anything she does technically IS for "fun", fitness orientated or not.
She should STOP focusing on weight, especially since BODY COMPOSITION is the important factor, and if she has muscle, then she might be heavier than she wants to be, since muscle weighs more than fat, even if the same amount of muscle mass looks so much better than the equivalent mass in bodyfat! Tanita scales are not an accurate indicator of body composition - especially since they can be affected by hydration, time of measurement, body temperature, etc. - and can be out by up to 10% bodyfat; the best that they can be used for is to see whether progress is up or down re body composition, and even then, take it with a grain of salt - she's better off going by the mirror and how her clothes feel than anything.
If you want to increase power for cycling, then you are NOT going to get it if you're dieting - in fact, you're likely to do the opposite, especially if she (and you) diet like a "typical person "dieting".
I don't know about cutting gels - I assume it is a topical. Some topicals can aid in fat loss, yes, but usually in conjunction with the appropriate nutrition and training.
I suggest that you get your wife to focus on her priorities - if it is fat loss, then do that, but if she wants to improve cycling performance (if she's not a competitive cyclist, then her performance is not that important), being stupid with diet and excessive training is not going to do it. All the best in whatever she decides to do, and whatever that is, I recommend that she does it the right way.
~Rosie~