What can Duchess Kate do to help relieve symptoms of morning sickness?

With Monday's exciting announcement that the Duchess of Cambridge is expecting her second child, came the news Kate is once again suffering from hyperemesis gravidarum, the same severe morning sickness she experienced whilst pregnant with Prince George.

The condition leaves the expectant mother with extreme nausea and dehydration, although this normally disappears by the beginning of their second trimester.

Alison Edwards, Senior Lecturer in Midwifery at Birmingham City University, says Kate could very well be as poorly this time around as she was in the early stages of her first pregnancy. Though it's equally likely she will feel better this time.

After initially suffering hyperemesis gravidarum, Kate then blossomed through her first pregnancy

She explains: "Though there is an increased chance due to having the excessive sickness before she may well have an entirely different experience this time with little or no sickness."

As to what Kate can do to make herself feel better, Alison says: "Though there is no ‘cure’ for morning sickness (and certainly not hyperemesis) there are steps that can be taken to try to settle the unpleasant symptoms."

Despite the lack of scientifically-proven remedies available, there are certainly natural steps that some mothers-to-be swear by.

"Making sure fluid intake is maintained is a priority," Alison says. "Flat coke has been found to help, as can arrowroot or ginger. Some women swear by travel bands. Small low fat meals can help and avoiding anything spicy."

She adds: "If the symptoms become excessive then medical advice must be sought as there are medications that can reduce the sickness and nausea; these do need prescribing however.

“Excessive morning sickness can make women unwell and certainly miserable, so plenty of support and rest are vital, especially if admission to hospital is required... There are also support groups set up by women who have experienced hyperemesis."

Kate was hospitalised in late 2012 with the same sickness. She is currently resting and receiving treatment from doctors at her Kensington Palace home.

The Duke and Duchess of Cambridge leave St Mary's Hospital, Paddington in December 2012 after the Duchess was admitted with hyperemesis gravidarum

Her presence at future public engagements will be decided on a "case-by-case basis", although it is hoped she will attend Wednesday's opening of the Invictus Games, the sporting event organised by her brother-in-law, Prince Harry.