<human>: Hi.

Biological male here weighing 90kg (6"), I'd like to drop to 70kg as quickly as possible without compromising my health, assuming that I don't care about muscle wastage and I meet vitamin and mineral recommendations is there actually any reason to stick to a small caloric deficit (500kcal) instead of a large one (1500kcal) as is usually recommended? Dietary adherence isn't an issue at all, I am *very* motivated and I have experience of prolonged fasting and extreme dietary restriction etc.

I plan on eating around 1000kcal per day, mostly in the form of a nutritionally balanced 'curry' which I have cooked in bulk and frozen in separate portions. This curry contains beans, tempeh, mushrooms, tomatoes, onion, garlic, peppers and spices along with blended spinach, kale and almonds with about a tsp of olive oil - according to Nutritiondata.com it provides over 50% of my RDA of everything per 1000kcal serving, and this along with a multivitamin seems acceptable for at least long enough to achieve my goal. The curry is delicious btw and I've been eating it for many years so 'gross tasting food' or 'boredom' aren't an issue.

You'll probably ask why I want to lose the weight, and especially why muscle wastage isn't an issue for me... well I'm a mtf transsexual and I'll be starting hormones soon and I want to lose the weight before then, and being a little less muscular wouldn't hurt =)

Thanks for any responses, I asked this in /r/nutrition and got no responses, if there is a better place than here to ask then please direct me.

Can you condense the text into a few key points?
<bot>: other than muscle wastage, what are the downsides of a large calorie deficit assuming vitamin, mineral and EFA requirements are met? I think not, but I don't want to be stupidly over looking something!