North Americans may be fighting the battle of the bulge. But in Japan, they have the exact opposite problem: With a record number of young, skinny women. In fact, 1 in 3 women in their 20s are underweight. And many Japanese girls skip at least one meal a day, in order to cut back on calories. The trend worries the government, because Japan is already among the thinnest industrialized nations. Mostly because of small food portions, and a diet heavy in fish and vegetables. The government also worries worry that the issue could affect fertility rates. Especially since Japan already has one of the lowest birthrates in the world. So, now they're treating "skinniness" as a national health problem. But they're fighting a losing battle - because the pressure for young women to be thin is worse than ever. Largely because the models that are popular in Japan are getting skinnier. And the trend affects attitudes. For example, one young woman we read about is 5-foot-one, and weighs 100 pounds - which is just above "underweight" on the BMI scale. But her friends think she's "fat!" But while young Japanese women have gotten too skinny, the men are gaining weight. Nearly 40% of men over age 40 are considered overweight. Which is the main reason that the Japanese government imposed "waistline standards," with a maximum waist size of 34 inches for men and women. And now, companies and local governments are required to measure the waistlines of men and women over age 40 as part of their annual health checkup. Employees with bigger waistlines have to undergo counseling. And if they don't lose the weight, the government fines the company they work for.