Why does it become much harder for older women to become pregnant? And how does fertility treatment differ from one country to the next? Ella Al-Shamahi finds out what women need to understand about their bodies.

Ella speaks to Sarah Allison who underwent fertility treatment in India, Spain and Greece. Sarah is now a fertility advocate and writes under the name Solo Fertility 40s.

She also talks to Dr Alison Campbell, a clinical embryologist and chief scientific officer of the Care Fertility Group, and a fellow of the Royal College of Pathologists.

(Image: (L) Sarah Allison, courtesy Sarah Allison. (R) Alison Campbell, courtesy Alison Campbell.)