Why did my family die young in the mid 19th century?

Been searching my family history on a website and found out that my great, great, great, granddad died at age 33 and my great, great, great grandma at age 42. However my great, great, great, great granddad lived until he was age 75. Wonder what was wrong with that generation. This was what UK people call the... show more Been searching my family history on a website and found out that my great, great, great, granddad died at age 33 and my great, great, great grandma at age 42. However my great, great, great, great granddad lived until he was age 75. Wonder what was wrong with that generation. This was what UK people call the Victorian era between 1837 and 1901.
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