Discuss apple and pear fat distributions. Which is more prone to cardiovascular problems? ...

Apples have fat around the waist; pears have fat around the hips and thighs.
Apples are prone to heart problems.
Pear fat has higher levels of HDL.
With apple fat, there is more accumulation closer to the heart; in engineering, the closer the impedance is to a pump, the more strain on the pump.

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BMI does not take into account body composition.
BMI only measures a height and weight relationship.
A heavily muscled athlete could register as obese according to BMI score, yet be very low in percent body fat.

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Men have more muscle; muscle requires more energy input.
Men have higher metabolic rates.

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Anorexia nervosa and bulemia nervosa.

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Men's bodies typically have higher muscle mass and lower body fat than women due to hormonal differences (testosterone levels mostly).

What an excellent community, thanks for answering