Shukra Dhatu
Sukra is produced from the most refined essence of the Bone Marrow. It is the cause of Ojas, which is actually the essence of all the seven Dhatus. The Shukra is responsible for vitality and energy of the body. In Ayurveda, the term is commonly used to describe both the male semen and the female egg, as they contain the essence of all of the other dhatus (tissues) of the body. Shukra is the seventh and final dhatu in the dhatus formation cycle. At times, two distinct terms are used to describe the male and female seed. Shukra universally applies to sperm but can also apply to the entire makeup of semen. Artava is the equivalent term used to mean ovum. However, artava also refers to the menstrual blood, a product of rasa dhatu. Thus, shukra is the best term to describe the factor that nourishes both the male and female reproductive tissues. In order to produce shukra dhatu, the primary element that must be consumed is water. Water is the primary nourishment of the body and of the dhatus, and shukra is its most refined form