I tend to eat more red meat around "that time" of the month, though a lot of my nutritional healing books say otherwise... dont know why that is, the extra iron will do you well!!
i tend to eat more than my fiance does, and i weigh considerably less than he does. I weigh around 120lbs at the moment and i have been trying to gain weight, though i fluctuate with 120-125 quite often, but that is completely natural for a woman.
I dont see any modifications that should be different with a man's and woman's diet.. except for women needing extra iron and calcium, which can easily be achived though eating kale. I eat about 4-6 cups of wilted kale a week, not only does it keep me up to date on my iron and calcium intake it also helps keep your digestive system running smoothly

hehehe
i wish you the best!
-Laura