One thing to keep in mind is that certain genetic factors affect what would be considered healthy weight levels.
http://www.obesityre...t/full/12/3/440For your typical white guy like myself, a BMI of 25 is considered overweight (used to be 27.5), and 30 is considered obese. On the other hand, for certain Asian groups, a BMI of 23 is considered overweight, and 25 is considered obese. In fact, according to the page I linked to, "Several studies conducted in China (2) (3) , Japan (4) , Taiwan (5) , and Hong Kong (6) have reported an association between a BMI >
22.3 kg/m2 and increased atherogenic risk factors." (bold my emphasis)
Of course, these are generalities across large segments of the world's population, so factors such as height, muscle mass, etc., are not taken into account. But in general, certain groups of Asians tend to be "skinnier", and it's not just due to lower body fat, but lower lean mass as well. Packing on fat to compensate only makes matters worse, as you can see from the reported
tripled risks of "diabetes, hypertension, and dyslipidemia" at a BMI as low as 26.0.
Packing on lean muscle, as dukenukem suggests, would be the best thing to do. Olive oil shouldn't hurt, as long as you're adding muscle mass, not fat mass. But adding muscle mass requires maintaining high blood levels of amino acids, which requires round-the-clock protein consumption (not just once or twice a day), totalling at least 1 gram per pound of lean mass, as duke pointed out.
BTW, sorry to make an assumption that you're Asian, I'm just basing it off your avatar pic.