The average weight varies widely depending on factors like age, gender, and region. Here are some key points:

• In the United States, the average weight for adult males aged 20 and older is about 199.8 pounds (90.6 kg).
• Average weight for males by age group in the U.S. ranges from about 188.6 lbs at age 20–29 up to about 208.1 lbs at age 30–39, then slightly decreases with older age groups.
• Worldwide, average adult weight varies by region. For example, average weights for combined genders by region (data from 2005) are:
  • North America: 177.9 lbs (80.7 kg)
  • Oceania (incl. Australia): 163.4 lbs (74.1 kg)
  • Europe: 156.1 lbs (70.8 kg)
  • Latin America/Caribbean: 149.7 lbs (67.9 kg)
  • Africa: 133.8 lbs (60.7 kg)
  • Asia: 127.2 lbs (57.7 kg)
• The world average adult weight is approximately 136.7 lbs (62 kg).
• Average weight naturally varies with height. For instance, in adults with heights from about 5 feet to 6 feet 4 inches, healthy weight ranges (classified by BMI) can span from roughly 100 lbs to over 300 lbs depending on height and weight category.

This shows that "average weight" depends on context—such as age, gender, and geographic factors—and that BMI and height are important for categorizing healthy weight ranges. If you want, I can provide detailed weight ranges by height or age group. Let me know! These findings are based on health data and studies from reliable sources such as Healthline, CDC, and others. Let me know if you want more specific breakdowns or details.