Vietnam is widely considered the country with the skinniest people, boasting the lowest obesity rate in the world at just 1.72% to 2.1% of its population. This leanness is driven by a traditional diet heavy in fresh vegetables, lean proteins, and rice, alongside high levels of daily physical activity.
Vietnam is the country with the lowest obesity rate in the world, making it the nation with the skinniest populations, followed closely by Bangladesh and Timor-Leste.
Vietnam, Bangladesh, and Timor-Leste are countries with the lowest national obesity rates, making their populations statistically the skinniest in the world.
The 10 Thinnest Countries in the World
Vietnam is widely considered the country with the skinniest people, boasting the lowest obesity rate in the world at just 1.72% to 2.1% of its population. This leanness is driven by a traditional diet heavy in fresh vegetables, lean proteins, and rice, alongside high levels of daily physical activity.
American Samoa is ranked as the number one most obese country/territory in the world, with adult obesity rates surpassing 70% to roughly 75.8% according to the Global Obesity Observatory and World Population Review.
Countries with the lowest obesity rates and the slimmest populations include Vietnam, Bangladesh, and Japan.
Countries with the lowest adult obesity rates globally include Vietnam (1.72%), Timor-Leste (2.45%), and Ethiopia (3.14%). These low levels are driven by distinct economic, dietary, and public health factors across different regions.
Yanjin County in Yunnan Province, China, is widely considered the narrowest city in the world. It is squeezed into a steep river valley, measuring only 30 meters (98 feet) wide at its narrowest point and roughly 300 meters (984 feet) at its widest.
The lightest recorded adult in history was Lucía Zárate from Mexico, who weighed about 14 pounds (6.4 kg) at age 20. Guinness World Records also noted historical cases like Rosa Lee Plemons, who weighed 27 pounds (12 kg) at age 18.
Vietnamese people stay slim due to a healthy traditional diet, active daily habits, and lower consumption of processed foods. Key factors include:
The obesity rate among Gen Z young adults (ages 18–24) is approximately 20% to 23%, with rates varying by gender. Recent reports indicate that nearly 33% of Gen Z males and 9% of Gen Z females are classified as obese.
Because body fat percentages are not uniformly tracked across every national census, experts measure this using national obesity rates and Body Mass Index (BMI) data. Vietnam has the lowest obesity rate in the world at just 2.1%. Japan is another leading nation with an adult obesity rate as low as 4.3%.
Being very skinny isn't automatically healthy and can carry serious medical risks. If a low body weight stems from malnutrition, it frequently leads to weakened immunity, fragile bones (osteoporosis), anemia, and hormonal imbalances. For tailored health advice, consider consulting local experts such as the nutritionists at VLCC Wellness or the dietetics department at Manipal Hospitals.
Depending on whether you measure by adult underweight rates or child malnutrition, the most underweight countries are primarily located in Sub-Saharan Africa and South Asia. World Bank Group
Vietnam is widely considered the country with the skinniest people, boasting the lowest obesity rate in the world at just 1.72% to 2.1% of its population. This leanness is driven by a traditional diet heavy in fresh vegetables, lean proteins, and rice, alongside high levels of daily physical activity.
France maintains a comparatively low adult obesity rate (around 10% to 17% depending on the data set) through mindful eating habits, structured meal times, and active, walkable urban environments. Government regulations and cultural practices heavily shape this lifestyle.
Japan’s low obesity rate—around 4% compared to over 30% in the U.S.—is driven by smaller portion sizes, a traditional nutrient-rich diet, and high daily physical activity. This balance is maintained through specific lifestyle, dietary, and cultural habits.
Vietnam is the country with the lowest obesity rate in the world, making it the nation with the skinniest populations, followed closely by Bangladesh and Timor-Leste.
What exactly counts as being "skinny?" Some healthcare experts believe a BMI in the 15-18 range to be clinically underweight. This seems to fall pretty close to what many everyday people consider to be "skinny" with a BMI of 18 or lower frequently listed as the indicator of someone considered to be slim.
In the United States, non-Hispanic Black adults have the highest prevalence of obesity, with nearly half (~49.6%) affected, followed closely by Hispanic adults (~44.8%) and non-Hispanic white adults (~42.2%). Non-Hispanic Asian adults have the lowest obesity rates at roughly 17.4%. Facebook
In the United States, non-Hispanic Black and American Indian/Alaska Native adults have the highest rates of obesity. According to data from the Centers for Disease Control and Prevention, obesity rates differ across groups based on health and social factors.
Yes, Germany faces a significant and growing obesity problem. Over 50% of German adults are overweight, with nearly one in four classified as obese. This public health crisis drives up healthcare costs, shortens average life expectancy, and reduces the country's GDP.