Angina, a symptom of coronary artery disease, manifests as chest pain due to reduced blood flow to the heart. Understanding angina is crucial for heart health as it often precedes heart attacks. Recognizing angina's warning signs can lead to early intervention, potentially saving lives. It's a vital indicator of underlying heart issues, emphasizing the need for awareness and timely medical response.

Anthrax, a serious infectious disease caused by the bacterium Bacillus anthracis, affects both humans and animals. With a history dating back to ancient times, it has been a feared biological threat.

Arthritis encompasses a range of joint disorders characterized by inflammation, causing pain and mobility challenges. It significantly impacts health, affecting millions globally.