Cause #1: Genetics
By far, the most common cause of hair loss is the hormone dihydrotestosterone (DHT). DHT shortens the growth phase of hair and causes hair follicles to shrink, producing progressively finer and fewer hairs until finally hair stops growing altogether. Some families have a strong genetic predisposition for fine or thinning hair due to DHT. There is a greater than 50% chance of receiving the hair-loss gene.
Cause #2: Hormonal Changes
A common causes of female hair loss is hormonal changes. These changes can result from a number of change-of-life events, such as reaching sexual maturity after puberty, pregnancy and menopause. Noticeable thinning of scalp hair occurs in about half of all women by age 50 as a result of hormonal changes.
Cause #3: Environmental Changes
There are also several triggers in your daily life that can affect your hair growth. Daily stress can impact your body and cause changes in your body that will affect how your body delivers oxygen, blood and hormones to your scalp. You can be effected by outside stressors also, such as diet, nutrition, medication, chemical and heat styling techniques. Your hair is a direct reflection of your overall health and all of these environmental factors can make an impact on what you see in the mirror.