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National Association for Premenstrual Syndrome

About PMS


John Studd

Patron of The National Association for Premenstrual Syndrome

Professor John Studd is a Consultant Gynaecologist at the Chelsea and Westminster Hospital and Emeritus Professor of Gynaecology at Imperial College.  He recently received the prestigious Khon Foundation Award for his “outstanding contribution in the field of Osteoporosis”. He is a member and past chairman of the British Menopause Society.

Professor Studd has a long working experience of menstrual health research, beginning when he started the first menopause clinic in Birmingham in 1969.  In addition to his research interest in menopause symptoms, Professor Studd has pioneered a number of groundbreaking treatments.  He championed the use of hormone implants for women with osteoporosis or with severe depressive or sexual problems after the menopause, and the now almost routine route of HRT after hysterectomy.  He was the first to prescribe the use of oestrogen patches and implants for the treatment of PMS.

Professor Studd has written more than 500 scientific articles and written or edited more than 25 post-graduate books on gynaecology.

He is Founder and a past Vice-President of the National Osteoporosis Society and was a Council Member of the Royal College of Obstetricians and Gynaecologists for many years and is also a Past-President of the Section of Obstetrics and Gynaecology at the Royal Society of Medicine.


John Studd

see above

Nigel Denby

Dietary Adviser to NAPS

Following the successful launch of his first book ‘Diet Freedom-the GL Diet’ in January 2005, Nigel has now written five further books including " The 7 day GL Diet".

 As well as writing books Nigel runs his own private practice in Harley Street specialising in weight management, PMS/Menopause, irritable bowel syndrome and food intolerance.  He is a member of the expert panel for the Nutrition and Health show, spokesperson for the British Dietetic Association, and a consumer dietetic adviser for "Complete Nutrition" magazine.

Amanda Moore BSc (Hons), MSc Nutrition, UKVRN

NAPS Trustee

Amanda is a Nutritional Adviser to the National Association of Premenstrual Syndrome and a trustee of the Association. She runs a Female Nutrition Clinic at The Hale in London.  She is committed to giving women access to nutrition advice that is evidence based.
As well as practising as a nutritionist, Amanda lectures, is actively involved in research at King’s College and is a member of the Guild of Health Writers. She publishes both academic research in peer-reviewed journals as well as articles in the popular press. She also offers nutrition-related business consultancy to companies in the UK.
Amanda is registered as a Nutritionist with The Association for Nutrition.

What is PMS?

PMS is a chronic condition experienced by menstruating women which is characterised by distressing physical, behavioural and psychological symptoms that regularly recur during the luteal phase of the  menstrual cycle ( from ovulation to the onset of a period) and that disappear or  significantly diminish by the end of the period (menstruation).

The menstrual cycle normally occurs monthly throughout a woman’s reproductive years as the lining of the womb (uterus) gradually grows in thickness and is shed at the period (menstruation).The average length of the menstrual cycle (from the first day of bleeding to the first of another) is 28 days but this is only an average and can vary greatly between women. Also an individual woman may find that the length of her menstrual cycle varies from month to month.

What causes PMS?

The precise causes of PMS have still to be identified but there is compelling evidence that symptoms are directly related to the fluctuation of hormone levels in the monthly cycle. As PMS is absent before puberty (onset of menstruation), in pregnancy and after the menopause there is clear indication that cyclical ovarian activity is an important factor in explaining PMS.

What are the symptoms of PMS?

PMS is characterised by a number of symptoms- over 150 have been identified
Common psychological and behavioural symptoms are: mood swings, depression, tiredness, fatigue or lethargy, anxiety, feeling out of control, irritability, aggression, anger, sleep disorder, food cravings
Common physical symptoms are: breast tenderness, bloating, weight gain, clumsiness, headaches
No-one experiences all identified symptoms. One symptom may be dominant. Each symptom may vary in severity during a cycle and from one cycle to another. New symptoms may present during a woman’s experience of PMS.
PMS symptoms may be experienced continuously from ovulation to menstruation, for 7 days before, at ovulation for3-4 days and again just prior to menstruation and in other patterns. Some women do not experience relief from symptoms until the day of the heaviest flow.

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