Melons Honeydew are known to be low on calories and a good source of vital nutrients. Honeydew has vitamin B complex including vitamins B1, B3, B5, and B6. According to the American Pregnancy Association, vitamin B3, also known as niacin, helps improve digestion, reduces nausea and takes the edge of debilitating migranes. The vitamin B6 content is melons casaba is essential for preventing the development of spinal disorders in your growing baby. Hence, melons honeydew are a good addition to your pregnancy diet.