PER

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10,159 published items.

Why is hypertension getting younger?
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Why is hypertension getting younger?

Besides genetic factors, unhealthy lifestyle is also one of the causes of high blood pressure in many young people today.

October 3, 2024
How was steel born?
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How was steel born?

Researchers don't know for sure when steel was invented, but some of the earliest examples of steel date back to the 1st millennium BC in Central and South Asia.

October 1, 2024