The Y chromosome doesn’t seem to do much except determine sex – but its loss in older men might be linked to heart disease, cancer and Alzheimer’s.

Both the UK and US Governments have pledged to end research using animals, but is such a goal realistic? And how might it change medical research? Talha Burki reports.

Chronic inflammation can cause fatigue, weight gain and poor sperm health. Fertility expert Dr Shivika Gupta explains its impact on reproductive health and prevention tips.

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