Much like the rest of your body, your hair goes through changes as you get older. The hair cycle -- rest, shed and grow -- slowdowns, and can lead to hair loss, which can be very traumatizing.
"Your hair changes every seven years," explains women's hair restoration expert Lucinda Ellery. "There are 150,000-200,000 hairs on our heads; we actually shed 100 a day, 36,000 in a year on average. It regenerates at approximately the same rate, although a little bit less each trimester.
"By the time you're 15, it's the best head of hair you'll have for your entire life.(Editor's note: Wah!) By the time you're 30 there will be a significant change in your hair, but not one you may have clicked into mentally. By the time you're 37, 40, there's a marked changed. This is where people panic -- it's a natural cycle of aging."
"The causes are always the same," says Dr. Mickey Barber, president of Cenegics Carolinas, an age management institute. "The number one reason is stress, number two is iron deficiency and the number three is hormonal, which could be affected by menopause, perimenopause."
Instead of panicking at the strands of hair in your brush, Ellery recommends taking control of your body by eating healthier.
"It's really how healthy your body is. You start to notice more shine and elasticity, if you start treating your body from within.," Ellery told the Huffington Post. "if you have a way of finding out if your body is acidic, imbibe foods that would make it more alkaline: Fresh vegetables, fresh salads, fresh nutrients in our drinks and our foods. [Avoid] acid making foods like milk and dairy products, breads, and potatoes [because they] change the pH value of your body."
So what foods should you eat to help strengthen your hair and avoid hair loss? Take a look at the slideshow below.
Nuts are great for fighting hair loss, Ellery says. "They have oils which contribute to the elastin in your hair [and] contributes to the growth. If you don't have enough oils in the body your hair will snap."
But don't overdo it, she advises. "It will make your hair lank."
Iron deficiency is the second cause of hair loss, and the easiest to treat, according to Dr. Mickey Barber, of the age management institute Cenegics Carolinas.
Spinach is rich in minerals and vitamins -- iron, beta carotene, folate and vitamin C -- which "keep hair follicles healthy and scalp oils circulating," according to WebMD.
Foods rich with magnesium help with hair growth, explains Ellery. A lack of magnesium can cause hair loss. Halibut (and other types of fish) are rich in the mineral.
Carrots are rich in beta carotene, which the body turns into vitamin A. When it comes to your hair, vitamin A helps produce scalp-sustaining oils, according to WebMD.
Dermatologists treating hair loss look at your ferritin levels, which detect if your body has a good level of iron and the health of your hair, explains women's hair restoration expert Lucinda Ellery. Help get those ferritin levels up by eating bok choy, which is rich in iron.
A lot of at-home hair mask recipes have greek yogurt in them for a reason. The perennial health food favorite greek yogurt can also help with your hair -- low-fat versions have vitamin B5 and vitamin D which are linked to hair and follicle health, according to WebMD.
Vitamin D is great for your hair, says Ellery. Eggs -- the whole egg mind you -- are a good source for this vitamin.