The benefits of sucking your thumb

Lesson Brief Al Jazeera
A recent New Zealand-based study has found that sucking your thumb or biting your nails as a child may have long-term health benefits. According to the study, sucking your thumb has been proven to correlate to a stronger resistance to allergies by strengthening your immune system early in life. This set features some difficult health-related vocabulary; however, most of it has direct applicability to real life. By video in the actual article has subtitles so you can follow along.
Al Jazeera

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