I had a similar idea about losing weight, but 'fasting' (ie: starving myself) seemed silly when I knew I need my health to be good when starting HRT.
So I decided to use a very old-fashioned weight-loss plan: Diet & Exercise.
Diet:
I stopped snacking between meals & cut out almost all snack foods from my diet. I ate 2-3 meals per day.
I tried eating home-cooked meals as much as possible (pizza, burgers & pancakes are not very slimming).
I ate until I was full instead of eating until I was stuffed (the difference being being completely not hungry versus not being able to move for 30 minutes).
I didn't count calories or worry too much about what I ate. E.g.: I used real butter when mashing the spuds & full-fat milk in my porridge (oatmeal), tea, etc. I still put 4 spoons of sugar in my porridge (made with 7 dessert spoons of oatmeal) and 2.5 in my tea (20oz cup). I did not ration my tea or coffee intake.
Exercise:
I decided to do some exercise as opposed to none.
I started by walking 2 miles per day. I gradually brought this up to 3 miles, then 4 miles. When 4 miles became easy I added a few ounces of leg weights, then a few ounces more ... until I had 2.5lbs on each ankle.
I walked every single day. No matter what. Snow, ice, rain, single-digit (F) temperatures or heat wave (100°F). On the really hot days I would usually walk after sundown. On really cold days, as near to afternoon as possible.
I gave myself permission to shorten my walk or to leave off the leg weights whenever I felt I needed to, which was about once every 2-3 weeks.
That's it. That's all I did.
I went from 202.6lbs on 20/Jan/2013 to 166lbs on 31/Jul/2013. A loss of 36.6lbs.
I started an anti-androgen in early May & estrogen in mid-June.
I did find some of that weight again when I visited my parents for a few weeks in October, rising to 183.6lbs at the start of November.
Surgery in late-November & illness since kept me from walking for a few weeks, but I'm back walking again now & this morning my weight was 171.8lbs.
This graph shows how my weight changed from 18/Jan/2013 to 1/Jan 2014:
http://imgur.com/7MrBW8KAlso see my post in another thread here:
https://www.susans.org/forums/index.php/topic,156250.msg1325183.html#msg1325183Do please note that the 7-day & 28-day rolling averages are much more useful indicators of progress that the daily measurements. The daily measurement could go up or down by as much as 3lbs. I wasn't really gaining or losing that much per day, it was just the luck of timing (good or bad). The rolling averages give a better idea of whether the trend is rising or falling.