We used Danish data from the years 1911 to 1915 on seasonal infant mortality in the first year of life and found that, according to our model (Eq. 4), infants born in June are the most vulnerable.
They Live the Longest
While October babies have the highest risk of disease among all birth months, they don't let that stop them from living very long lives. According to a 2011 study of over 1,500 centenarians (or people that live to be 100), babies born between September and November live the longest.
According to the CDC, February is the least common birth month. That's also logical, seeing as nine months prior is May which marks longer, sunnier days, warmer temperatures and usually more outside activity.
Males born in the Lesotho have the lowest life expectancy of the world in 2022. Similarly low is the life expectancy for females born in this country. The average woman lives only 56 years. The lowest life expectancy for women in the world in 2022 was for girls born in Nigeria, with only 54 years.
Birth month can influence our personality traits such as being extroverted or introverted. Studies have shown that people born in odd-numbered months are more likely to be extroverted than those born in even-numbered months.
They found that babies conceived in summer months (June-August) were almost a third of an ounce (8 grams) heavier than babies born in other months. Together, the duo compared more than 1.4 siblings born to 647,050 mothers in New York City, New Jersey and Pennsylvania.
The Most Successful Birthdays
Out of 365 days in a year, April 30 proves to be the birthday that has produced the most winners. Among 1,000 winners or shortlisted nominees, 11 were born on this date, including Oscar-winner Cloris Leachman, one of the most celebrated actresses in history.
But a statistical study of centenarians by researchers at the University of Chicago has found some other potential predictors of extreme longevity. Women and men who were the first born in large families, the study found, were two to three times more likely to make it to 100 than later-born children.
The average male life expectancy is five years less than females. Men are also two to four times more likely than women to pass away prematurely from unintentional injury, homicide, and suicide. These are unfortunate statistics and are based on several complex reasons—both social and biological.
The current life expectancy for Australia in 2023 is 83.94 years, a 0.18% increase from 2022. The life expectancy for Australia in 2022 was 83.79 years, a 0.18% increase from 2021. The life expectancy for Australia in 2021 was 83.64 years, a 0.18% increase from 2020.
According to real birth data compiled from 20 years of American births, mid-September is the most birthday-packed time of the year, with September 9th being the most popular day to be born in America, followed closely by September 19th.
The death rate was 1,735 per 100,000 for lifelong bachelors and 1,773 for divorced men. Married women had a death rate of 569 per 100,000, two-and-a-half times lower than the 1,482 rate for widows.
Findings based on millions of deaths suggest that shorter, smaller bodies have lower death rates and fewer diet-related chronic diseases, especially past middle age. Shorter people also appear to have longer average lifespans.
In this study, men who were 5'2″ or shorter were more likely to have a protective form of the FOX03 gene, and lived the longest. Those over 5'4″ had shorter lifespans. Shorter men were also shown to have less incidence of cancer, and lower fasting insulin levels.
Those born in September are, apparently, the smartest out of the entire year. According to Marie Claire, a study published in the National Bureau of Economic Research found that there's a clear correlation between the month during which you were born and how smart you are.
Firstborn children are taller compared to those born subsequently, and this height advantage increases sharply over the higher order of birth of siblings.
In concluding the study, co-author and psychologist at the University of Padova in Italy Paola Bressan noted that to the best of her knowledge, “no study has either replicated or supported” the findings from the 1995 study that stated babies resemble their fathers.
Results demonstrated that females born in spring (May) were rated as being significantly more attractive than those born in autumn (September and November). Effect of the month of birth on physical attractiveness.
Based on the study findings, they suggest the optimal time between giving birth and getting pregnant again is 18 months, with a range of 12 to 24 months. That said, many experts still adhere to the recommendation of 18 to 24 months.
The most common birthday in Australia is September 17th! The least common birthday (you may have guessed it is) is Christmas Day, the 25th of December. If you are inclined to count leap years in the mix then the 29th February is the least common birthday, but only because they occur once every 4 years.
Most babies (91%) in Australia are born at term (37–41 weeks).