A weak constitution disposed her to frequent illness.

由于体质差，她动不动就会生病。

youdao

Gout results from weak constitution and improper diet and subsequent phlegm obstruction and blood stasis, which internally impair the kidneys and externally stay in bones, collaterals and joints.

痛风多由于禀赋不足、饮食不节、痰湿内阻、血行不畅、痰瘀互阻，内伤于肾，外阻于骨骼、络脉、关节而成。

youdao

He believes that weak constitution is an important factor in the occurrence of CRF and improper diet and emotion can produce toxin;

任继学教授提出禀赋薄弱是慢性肾衰发生的重要原因，并认为饮食、情志不节均可化毒。

youdao

One could argue that one of the reasons al-Maliki is weak is because the constitution makes him weak.

NPR: Hadley's Memo on Maliki Reveals U.S. Analysis

The deal split the Balkan nation along ethnic lines into two semi-autonomous parts linked by a weak central government and guided by a constitution that did not envisage a culture ministry.

WSJ: Prized Bosnian cultural relic won't show in NYC

This is ironic: the whole point of Thailand's last democratic constitution, passed in 1997, was to free the country from the cycle of weak and unstable coalitions and frequent coups.

ECONOMIST: Thailand's referendum