By Billy Hammond (Copyright AELS)

September 21, 2020

In classes that I’ve taken in biochemistry and physiology, the professors and the textbooks tend to describe fat storage in adult males as “apple” shaped and that in women as “pear” shaped.

The technical terms are “android pattern storage” (men) and “gynecoid pattern storage” (women).

After puberty, males tend to store fat in and on their abdomens and upper bodies, whereas women store it around their breasts, hips and thighs. These storage characteristics lead to the apple and pear shape analogies. Of course, there are exceptions and some women will store fat in an android pattern, so it isn’t iron-clad for either gender.

Another interesting fact is that upper body fat deposition occurs more due to hypertrophy of the cells that are already there, whereas in the lower body, it’s due more to fat cell differentiation (hyperplasia), meaning that it’s more difficult to lose weight deposited in the lower body.

男性&女性:リンゴと洋ナシ

今まで受けた生化学や生理学のコース内で教授や教科書は男性の脂肪貯蔵をリンゴの形に、女性のを洋ナシの形に類似するように説明された。

専門用語では“android pattern storage”(男性型肥満)と“gynecoid pattern storage”(女性型肥満)と言う。

思春期後男性は脂肪を上半身や腹部上内に貯蔵することに対して、女性は乳房、臀部や大腿部に貯蔵する。これらの貯蔵パターンはリンゴと洋ナシの形に類似する。但し、例外もあるので100パーセントではない。

更に面白いのは上半身の脂肪貯蔵は既存する細胞の肥大によるもので、下半身の場合は脂肪細胞の異常増殖によるので下半身分の体重は上半身分よりも減らしにくい。

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