"Hair reflects internal changes--things like sickness, nutrition and stress," says dermatologist
Paradi Mirmirani, M.D., a faculty member of the American Academy of Dermatology. There are
three parts to your hair: the hair shaft (the fiber), the hair bulb (the root) and the hair cycle (the
period of rest and regeneration). Most problems are related to one of these three things, says
Mirmirani.
美國皮膚學會教員、皮膚科醫學博士馬諾莫尼表示：“頭發可以反映出身體內部的變化——比如疾病、營養和壓力。” 我們的頭發包含三個部分：毛干(纖維)，毛球(根部)和毛發周期(休息和再生的周期)。馬諾莫尼表示，大多數的頭發問題都與其中的某個部分相關。

1 Issue: Excessive hair shedding 脫發嚴重

Each individual strand of hair has its own cycle, growing for six to
eight years, resting for a few months, and then shedding. "About 10
percent of your hair is shedding at any one given time," Mirmirani
says, pointing out that many things can interrupt the cycle and cause more hairs to shed earlier,
including stress, fever, weight loss or low iron levels. If you're noticing more shedding than
usual, examine your lifestyle to see what might have changed or consult your dermatologist for
tests.
每根頭發都有它自己的生長周期，生長6-8年后，停止生長幾個月，然后脫落。馬諾莫尼說：“百分之十左右的頭發會在任何一個特定的時間脫落。”她指出，壓力、發燒、體重減輕或缺鐵等因素都會打斷頭發的生長周期，并使更多的頭發提早脫落。如果你發現頭發脫落比平時更多，檢查一下自己的生活方式，看看發生了什么改變或者咨詢一下皮膚科醫生。

來源:可可英語 http://www.ccdyzl.cn/read/200912/92120.shtml