## Core Concept
The question pertains to factors associated with increased ageing, focusing on the exception among the provided options. Ageing is a multifactorial process influenced by genetic, environmental, and lifestyle factors. Cellular and molecular mechanisms, such as telomere shortening, oxidative stress, and epigenetic changes, play crucial roles.

## Why the Correct Answer is Right
Option is related to **insulin/IGF-1 signaling pathway**. This pathway is known for its role in regulating growth, metabolism, and longevity. Studies in various organisms have shown that reduced insulin/IGF-1 signaling can lead to increased lifespan, suggesting a link between this pathway and ageing.

## Why Each Wrong Option is Incorrect
* **Option A:** is associated with **oxidative stress**, which is a state of imbalance between free radical production and antioxidant defenses. Oxidative stress is known to contribute to ageing by damaging cellular components.
* **Option B:** relates to **telomere shortening**, a natural process that occurs as cells divide. Telomeres protect chromosome ends, and their shortening is a marker of cellular ageing.
* **Option D:** is linked to **inflammaging**, a chronic, low-grade inflammation that is a characteristic of the ageing process. Inflammaging contributes to the development of age-related diseases.

## Clinical Pearl / High-Yield Fact
A key point to remember is that **caloric restriction** and **metabolic regulation** can influence ageing. The insulin/IGF-1 signaling pathway is a critical regulator of longevity, and its dysregulation is associated with various age-related diseases.

## Correct Answer: D.