Harvard University public health study identify pessimism as a factor that doubles the risk of heart disease .
A pessimistic perspective on life may be harmful to heart health.
Over the course of ten years, the study followed 3,000 men and women between the ages of 52 and 76. Participants were polled prior to the study to gauge how well their outlooks matched up with optimistic and pessimistic personality qualities.
According to the study, males who were assessed to be the least pessimistic were four times as likely to acquire heart disease. The study's most pessimistic participants also had a greater than twofold increased risk of dying from coronary heart disease.
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Approximately 74 percent of adults in the United States are overweight. BMI
is known as body mass index and it is calculated by
BMI= weight/height
BMI = kg/m²
Body mass index helps to determine if a person is overweight or
underweight. Being over weight means having a BMI of 25-29.9 while
having below 18.5 means being underweight.
Recent studies have however shown that approximately 74 percent of adults
have a BMI of greater than 25 which means they are overweight.
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The volume flow rate of blood that moves at 0.20 m/s through an artery with a diameter of 1.0 × 10^-2m is 0.2×10^-2 m^3/s.
What is volume flow rate?
The volume flow rate Q of a fluid is defined to be the volume of fluid that is passing through a given cross sectional area(A) per unit time.
where,
Q is the volume flow rate of a fluid;
A is the cross sectional area;
v is the velocity of the fluid.
Q = 1.0×10^-2m × 0.20 m/s
Q = 0.2×10^-2 m^3/s
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