Most Common Diseases in the World that Can be Deadly!

Vaibhav Saxena

, Health A2Z

Whenever you ponder about the most common diseases, you most probably think of the diseases that you or your acquaintance must have acquired in the recent timeframe. Although it is true that the most commonly acquired diseases are the common ones also there are many diseases that are potentially common among various sections of the society but everyone doesn’t stay aware of them as well.


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Did you know that an estimated 56.4 million people passed away worldwide in 2015, and 68 percent of them were due to diseases that progressed slowly? Yes, diseases are fatal and alarming so staying aware and notified of all the potential most common diseases in the world that may affect is the ideal choice.




Below is the list of human body systems and the most common diseases that are evolved in those sections.


1. Respiratory System


The respiratory system of the body is the most susceptible and sensitive part of the body which is instantly disclosed to many diseases. According to the statistics, long-term respiratory diseases, hay fever, asthma and chronic obstructive pulmonary disease (COPD) predominate are among the most common diseases that have affected people around the globe. Alone in India, over 15 million are affected by the aforementioned diseases.



2. Mental Illness and Disorders


It is quite typical to recognize that whether a person is experiencing a mental problem or not. Anxiety disorders occur most frequently, followed by personality and mood disorders, including major depression and bipolar disorder. Attention-deficit hyperactivity disorder (ADHD) is the most common developmental disorder, affecting roughly 9 percent of children and 4 percent of adults.



3. Cardiovascular System


Cardiovascular system comprises of the parts of the body that are being involved in the blood circulation process. High blood pressure is one of the most common diseases in the world that has been affecting more than 100 million people around the globe. High blood pressure is the root for multiple chronic conditions like stroke, heart attack, and ultimately death.



4. Musculoskeletal System


Arthritis is the most common disease in the world that affects the bone health of the people. Arthritis is a general term referring to any of several diseases that cause joint pain, inflammation and possibly destruction. Osteoarthritis, also known as degenerative arthritis, is the most common arthritic disease. Other prevalent types include rheumatoid arthritis and gout.



5. Skin Diseases


It is quite astonishing that skin diseases are one of the most common diseases in the world that keeps on making troubles in the life of regular people. Noncancerous, precancerous and cancerous skin growths are few of the skin conditions that have been affecting many people. Elaborately, Warts, cold sores, and genital herpes, Jock itch, athlete’s foot, ringworm and yeast infections, Boils and cellulitis, Psoriasis, atopic dermatitis, seborrheic dermatitis, and rosacea are acquired frequently and recurrently by every other person.


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6. Urinary and Reproductive Systems


Every year more 21% of the women around the globe report some kind of Urinary or Reproductive system disease. Men and children also encounter these problems but not much frequently as compared to the women. Major urinary or reproductive system diseases involves urinary tract infection, new chlamydia, gonorrhea, and genital herpes infections. Also, sexually transmitted diseases are extremely common as well along with kidney infections.



7. Neurological System


Headache disorders affect most people around the world which gives us the statistics that 28% of the overall world population encounters headache disorders such as migraines, chronic or mild and Alzheimer’s diseases. Memory loss that disrupts daily life may be a symptom of Alzheimer’s or other dementia. Alzheimer’s is a brain disease that causes a slow decline in memory, thinking and reasoning skills. Whereas, headache disorders involve severe ache in the head portion.



8. Digestive System


The digestive system diseases fall under the category of the gastroenteritis, these occur typically due to contamination of food with viruses, bacteria or parasites and usually clear within a few days to weeks. More persistent, common diseases of the digestive system include Gastroesophageal reflux disease (GERD), Gallstones, Diverticulosis, or outpouching of the intestines and Ulcers of the stomach or first part of the small intestine.



9. Other Common Diseases


There are many other diseases that don’t fall under the category of most common diseases in the world but are extremely common as well as chronic. HIV/AIDS, cancer and chronic viral hepatitis are the prime members of this category that affects people around the globe in millions.






The diseases around us are inevitable yet preventable so every person must stay aware of the most common disease in the world and should stay alert of them to avoid any hassle in future.


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