Several articles referenced in the provided sources use a similar framing about divorce rates and why marriages may become strained in people’s 40s and 50s. The Daily Mail items presented here do not include additional verifiable reporting details, specific statistics, named experts, or documented research findings in the text supplied. Instead, the excerpts are largely personal or promotional in tone, beginning with an anecdotal account of a friend leaving a “miserable marriage,” without explaining measurable causes or offering supporting evidence.

Across both provided snippets, the common theme is midlife relationship breakdown and the idea that some marriages may be at risk without people fully recognizing it. However, because the supplied content does not state particular reasons (such as economic factors, health, infidelity, or policy changes) or provide sources, the underlying claims cannot be independently confirmed from the excerpts. As a result, the synthesis reflects only the shared premise and lack of detail in the supplied text, rather than specific causes.