Well if you can lose weight that easily, go for it. Try just cutting out junk food and see how you do.
For now, that's what I'm doing. But I suspect my goal is a bit different from lots of the guys here who seem to have been training a while.
As far a data on the "low carb vs. high carb" debates, the non-junkfood switch is a reduction in carbs relative to the diet that got me up to BMI of 27.2. My Tanita scale reported 33% body fat, and the trainer at the gym got the same number. This site calls that bodyfat obese.http://www.healthchecksystems.com/bodyfat.htm
while this one just calls it over-fat http://www.nutribase.com/fwchartf.shtml
. Mind you, I don't think the average person in the street looking at would have called me obese-- but I was fat.
The junk food was mostly high calorie carb/fat bombs. For example: impulse buy doughnuts when shopping for groceries; impulse buy hershey or kit-kat bars, corn chips with salsa, buttered bread as a snack at home, pillsbury turnover while watching tv. Daytime snacks are now usually raw veggies, fruit in non-fat yogurt. So, both carbs and calories are lower.
As for carbs: I am still eating cereal with skim milk for breakfast which, by itself, puts me over the 20 grams of carbs a day. I still sometimes eat ham, tuna or chicken sandwiches using honest to goodness bread for lunch. I use some carbs in recipes-- for example, I prepare things like peppers stuffed with a sort of veggie-wholewheat cous-cous- meat-loaf left over from the night before. I still drink hot-chocolate made with skim milk on colder evenings, or drink smoothies with dairy on warmer ones. So, that's 11 g or so of carbs there. I've have no potatoes, bread, rice or mainly carb side dish on roughly 3 dinners a week, but some dinners are carb heavy. About 1 night a week I eat pasta. I love that-- I'm not going to give it up forever. One dinner a week is are bean-with meat dishes (but the no bread.) Friday's I often go out for pizza but make sure I don't pig out. Ordering a salad before helps.
I plan my meals to make cooking and grocery shopping more efficient. I've checked the balance of a weeks diet and I'd say I'm it's 'medium' carb. It's got more protein than I'd get following the food pyramid which has such small portions of meat. But it's got way more carb than anything people call low carb. The milk and non-fat yogurt alone push me over 20 grams of carbs a day.
Doing this my BMI is down to 23.5. It was 22 when I was in my 20s. I don't really have health reasons to get that low, so I think I might aim for 22.5 now and the scale says 26% body fat. One of the sites I linked suggest a 21-24% is a fit level of body fat; the other one suggests 22-25% as normal. So, I think I'm going to celebrate when the scale reports 24% bodyfat averaged over the week.
I suspect I can get there without doing anything drastic. After that, I'm going to focus on strength building and keeping weight stable, for at least 3 months. Provided I don't develop some sort of body dysmorphia, I think I'll be pretty happy at that weight.