The Tiens principle of healing goes far beyond merely conceiving. Instead the emphasis is on creating a child who is wise and sagacious and who will contribute to society and become an enlightened citizen.” According to Tiens, infertility occurs when a person’s reproductive tissue remains deprived of nourishment. This can be caused due to accumulation of certain toxins in the body, increased use of pesticides and chemical fertilizers, high levels of stress associated with modern lifestyle and genetic disposition. Stress seems to aggravate the risk of Infertility. It has been found that women with high levels of alpha-amylase, an enzyme that correlates with stress, faces problems while conceiving.
You can use this link too