Daw'r cyngor newydd gan Bwyllgor Arbenigol y Prif Swyddogion Meddygol ar gyfer Gweithgarwch Corfforol a Beichiogrwydd, sy'n cynnwys bydwragedd, obstetryddion, seicolegwyr ymarfer corff, meddygon teulu, Ymgynghorwyr Iechyd y Cyhoedd, Meddygaeth Chwaraeon, gweithwyr ymarfer corff proffesiynol, gwyddonwyr ymchwil a nyrsio. Yr Athro Marian Knight a Dr Charlie Foster o Brifysgol Rhydychen fu'n arwain y prosiect. Y nod oedd llunio negeseuon ar sail tystiolaeth i weithwyr iechyd proffesiynol eu defnyddio â'r cyhoedd. Cafodd y ffeithlun ei ddatblygu a’i brofi â phaneli o weithwyr iechyd proffesiynol a menywod beichiog cyn mynd ati i ymgynghori â dros 250 o feddygon a bydwragedd yn y DU.
The new advice was constructed by the CMO Expert Committee for Physical Activity and Pregnancy, which included midwives, obstetricians, exercise physiologist, GPs, Public Health Consultants, Sports Medicine, exercise professionals, nursing and research scientists. The project was led by Professor Marian Knight and Dr Charlie Foster from the University of Oxford. The aim was to produce evidence-based messaging for health professionals to use with the public. The infographic was developed and tested with panels of health professionals and pregnant women before consultation with more than 250 UK based doctors and midwives.