The maternal bond between a
woman and her biological child usually begins to develop during
pregnancy. The pregnant female often adapts her
lifestyle to suit the needs of the developing
infant, for example by eating or refraining from eating certain foods or undertaking or avoiding certain activities. At around 18 to 25 weeks, the mother begins to feel the fetus moving. Similar to seeing her child for the first time in an
ultrasound scan, this experience often leads the mother to feel more attached to her child. Once sufficiently developed, the developing fetus has some awareness of the mother's heartbeat and voice and can respond to touch or movement and hear sounds from the surrounding environment. By the seventh month of pregnancy, two-thirds of women report a strong maternal bond with their unborn child. They are more likely to suffer from
post-partum depression or other mental health problems and less likely to breastfeed. ==Childbirth and post pregnancy==