In the absence of weight loss, controlling blood pressure, blood sugar and cholesterol can still do a lot of good.
Obesity, diabetes and cardiovascular problems may be joined by even more serious ailments as research continues.
Alarmist assumptions may be off the mark, but Americans are still well short of nutrition goals.
A high-fat diet in adolescent women is linked to an aggressive subset of cancers that carry a worse prognosis.
An Australian study associates a healthy diet with independence in eating, dressing, grooming and other basic tasks in later life.