## **Core Concept**
The 12 by 12 initiative is a global health strategy aimed at reducing the burden of a specific disease. This initiative focuses on a major public health problem that affects millions worldwide, particularly in low- and middle-income countries.

## **Why the Correct Answer is Right**
The 12 by 12 initiative specifically targets **asthma**. The goal is to have 12% of the population with asthma on **inhaled corticosteroids** by the year 2012, though the initiative's relevance and specific targets may evolve over time. Asthma is a chronic inflammatory disease of the airways characterized by recurring episodes of reversible airflow obstruction. The use of inhaled corticosteroids is a cornerstone in the management of persistent asthma due to their potent anti-inflammatory effects.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because, without specifying the content, it's hard to directly refute, but given the context, it doesn't align with the known objectives of major global health initiatives related to asthma or similar widespread conditions.
- **Option B:** This option is incorrect as there's no widely recognized global health initiative directly matching this description in relation to major diseases like asthma, diabetes, or hypertension.
- **Option C:** While several global health initiatives exist for various diseases, the 12 by 12 initiative is specifically known for asthma, making other disease-focused initiatives incorrect in this context.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **inhaled corticosteroids** are the most effective anti-inflammatory medication for the long-term control of asthma. The 12 by 12 initiative underscores the importance of ensuring access to these essential medications for asthma management.

## **Correct Answer:** D. Asthma.