Lifespan of an average Indian has increased to about 64 years. Why?

Explanation

### Step-by-Step Solution:

1. **Introduction to Lifespan Increase**:
- The average lifespan of an Indian has increased to about 64 years. This change is significant compared to the past, where the average lifespan was around 50 years at the time of India's independence in 1947.

2. **Advancements in Medical Facilities**:
- Over the last century, there have been remarkable advancements in medical technology and healthcare. These advancements have led to better medical facilities being available to the population, which has contributed to increased life expectancy.

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