Your hair is very sensitive. It's growth cycle is often affected by stress. Balance and control over your diet, nutrition, sleep, and stress level will always help minimize negative effects on your body and your hair. The constant attacks on your hair by heat and chemical styling need to also be watched so the hair you have stays happy and on your head.
Use products that were designed to treat women's hair loss; there is a difference. Use sulfate-detergent-free shampoos that don't aggressively strip your hairs protective matrix. Use products that provide your scalp with the proper hydration and support for best hair growth. Careful attention to diet and sleep is critical. Above all, be good to yourself, you deserve it.