While some negative health outcomes associated with obesity are accepted within the medical community, the health implications of the<unk>  category are more controversial. A 2016 review estimated that the risk of death increases by seven percent among<unk>  people with a BMI of 25 to 27.5 and 20 percent among<unk>  people with a BMI of 27.5 to 30. Katherine Flegal et al., however, found that the mortality rate for individuals who are classified as<unk>  (BMI 25 to 29.9) may actually be lower than for those with an "ideal" weight (BMI 18.5 to 24.9), noting that many studies show that the lowest mortality rate is at a BMI close to 25. The specific conclusions appear to depend on what other factors are controlled for, and Flegal has accordingly alleged that the findings from the 2016 review are driven by bias toward preconceived opinions. Being<unk>  has been identified as a risk factor for cancer, and Walter Willett predicts that being<unk>  will overtake smoking as the primary cause of cancer in developed countries as cases of smoking-related cancer dwindle. Being<unk>  also increases the risk of oligospermia and azoospermia in men. Psychological well-being is also at risk in the<unk>  individual due to social discrimination. Being<unk>  has been shown not to increase mortality in older people: in a study of 70 to 75-year old Australians, mortality was lowest for<unk> " individuals (BMI 25 to 29.9), while a study of Koreans found that, among those initially aged 65 or more, an increase in BMI to above 25 was not associated with increased risk of death.
Overweight
Underweight
Obesity
Abdominal obesity
Body mass index
Worried well 
Normal weight obesity
IS PATH WARM?