What is postpartum hair loss?

Postpartum hair loss is the significant loss of hair that occurs many months after giving birth. It is the result of hormonal changes that occur during and after pregnancy.

Hormonal changes are the primary cause of postpartum hair loss, but diet has a considerable influence on the degree of shedding and the rate of recovery. The body experiences significant physical strain during the postpartum period as a result of childbirth recovery, nursing, and tissue regeneration. When the body is stressed or lacking in critical nutrients, hair, as a non-essential tissue, is one of the first to be damaged, resulting in increased hair loss.^1,2 As a result, meeting nutritional needs during the postpartum period is critical for reducing hair loss and encouraging regrowth.

Proper diet not only aids in overall postpartum healing but also supports the biochemical processes that regulate hair follicles. Understanding how nutrition impacts hair health enables women to take informed efforts to regulate and perhaps prevent postpartum hair shedding through particular dietary changes.³

Postpartum hair loss is considered to be caused by hormonal changes during pregnancy. The human hair follicle exhibits cyclic activity, with periods of enormous growth (anagen), apoptosis-driven involution (catagen), and resting (telogen), each lasting around 1,000, 10, and 100 days, respectively.^4,5 During pregnancy, the anagen phase lasts longer, and some follicles may even stay in the anagen phase throughout the pregnancy. All highly stimulated hair follicles enter the catagen phase at the same time postoperatively.^4,6 This shift to the catagen phase is thought to cause severe postpartum hair loss, which is commonly referred to as telogen effluvium.⁵ 

Hormonal changes during the postpartum period

Hormonal variations during the postpartum period have a significant role in the hair loss that many women experience after giving birth. Gaining insight into these hormonal changes is critical to understanding why postpartum hair loss, also known as telogen effluvium, happens and how these changes influence hair health.

Role of oestrogen in hair growth and postpartum hair loss

During pregnancy, elevated levels of oestrogen cause a significant change in the hair growth cycle. Under normal conditions, hair follicles go through a cycle with three main phases:

1. Anagen phase: the growth phase, where hair actively grows
2. Catagen phase: a brief transition phase when the hair follicle shrinks
3. Telogen phase: the resting phase, where hair is shed

In pregnancy, higher levels of oestrogen prolong the anagen (growth) phase of hair, resulting in fuller, thicker hair. Oestrogen helps hair follicles stay in this phase longer than usual, which is why many women notice that their hair feels more voluminous during pregnancy.⁷ The elevated estrogen prevents a significant portion of hair from entering the telogen (shedding) phase, reducing normal hair loss.

After childbirth, however, estrogen levels rapidly decline as the body returns to its pre-pregnancy state. This abrupt drop causes many hair follicles to transition from the anagen phase to the telogen phase at once, leading to an increase in hair shedding, a condition known as telogen effluvium.⁷ Postpartum hair loss generally begins two to four months after delivery and can last up to six months or more, but it typically resolves within a year as hormone levels return to normal.

Key nutritional factors contributing to postpartum hair loss

Iron deficiency

Iron is essential for the formation of haemoglobin, a protein found in red blood cells that delivers oxygen throughout the body. Hair follicles require a constant supply of oxygen and nutrients to grow properly, and a shortage of iron can cause thinning hair or frequent shedding.

Postpartum context: following delivery, many people assigned female at birth endure blood loss, which can deplete iron levels and contribute to iron deficiency anaemia. Furthermore, the body's increased need for iron during nursing might deplete iron reserves if not supplemented adequately.

Impact on hair: Insufficient iron reduces oxygen flow to hair follicles, which may cause hair to shed (telogen) earlier than expected.^8,9

Dietary resources: Foods high in iron include red meat, lentils and leafy greens.

Vitamin D deficiency

Vitamin D is required for a variety of human processes, including control of the hair growth cycle. It contributes to normal hair follicle function and encourages follicle development.

Postpartum context: Following delivery, many people assigned female at birth are at a higher risk of vitamin D insufficiency, particularly if they have limited exposure to sunshine, which can be common in those breastfeeding or chestfeeding, who spend more time inside.

Low vitamin D levels can interrupt the hair development cycle, resulting in thinning or increased shedding.¹⁰

Dietary sources of vitamin D include sunshine, fatty fish such as salmon, fortified dairy products, and supplements.

Protein deficiency

Hair is made up largely of keratin, a structural protein. Lack of protein might lead the body to save protein for critical tasks, making hair growth a lesser priority.

Postpartum context: following delivery, the body's protein need rises, particularly during recuperation and lactation. Insufficient protein consumption might result in thinning hair and excessive shedding. A protein deficit can make hair brittle and more prone to breaking, and in severe cases, it can induce hair loss (telogen effluvium).

Dietary resources: Eggs, chicken, fish, beans, nuts, and dairy products are all excellent sources of protein.

Lack of essential fatty acids (omega-3)

Omega-3 fatty acids are essential for optimal scalp health and hair follicle activity. These necessary lipids minimize inflammation and feed the hair follicles.

Postpartum context: Omega-3 fatty acids are essential for postpartum recovery because they promote tissue repair and decrease inflammation. Deficiencies can develop if the diet lacks healthy fats. Inadequate omega-3 levels can cause a dry, flaky scalp and damage hair follicles, leading to loss.

Dietary sources of omega-3s include fatty fish (salmon and mackerel), flaxseeds, walnuts, and chia seeds.

Nutritional strategies to combat postpartum hair loss

Telogen effluvium, or postpartum hair loss, often occurs one to six months after childbirth and is caused by a significant decline in estrogen levels. While this is a transitory condition, with hair often coming back within a year, dietary recommendations can help to reduce the symptoms and stimulate hair regeneration.

Continue prenatal vitamins: After childbirth, taking prenatal vitamins, particularly those containing folic acid, can help promote hair development. Folic acid promotes cell turnover, which is necessary for hair health.

Iron and protein intake: Nutritional deficits, particularly in iron and protein, can lead to hair loss. Ensuring appropriate consumption of these nutrients is critical. Iron aids red blood cells in transporting oxygen to hair follicles, whereas protein is a building block for hair structure.

Biotin: This B vitamin is often related to hair health. Although scientific data is lacking, several women report that biotin pills assist in strengthening their hair and nails.

Omega-3 fatty acids: Found in fish oil and flaxseed, omega-3s promote scalp health and may decrease hair loss. They feed the hair follicles and provide a healthy scalp environment for hair development.

Zinc deficiency is connected to hair loss. Zinc has an important role in tissue healing and hair follicle activity.

Other lifestyle tips to support hair regrowth

Gentle hair care routine

It is critical to manage your hair with care during the postpartum period, when hair is more prone to shedding. Use a wide-toothed comb to reduce breakage, and avoid overbrushing, which can accelerate hair loss. Choose sulfate-free shampoos and conditioners, which are easier on your hair and scalp. Limiting usage of heat styling appliances like blow dryers and flat irons, as well as harsh chemical treatments like dyes or perms, helps to reduce hair damage and breakage.

Avoid tight hairstyles

Tight ponytails, buns, and braids can cause stress on the hair follicles, resulting in traction alopecia. This can exacerbate postpartum hair loss. Loose hairstyles should be avoided. This can exacerbate postpartum hair loss. Loose hairstyles are better to prevent placing extra strain on the hair and scalp.

Scalp massage

Massaging the scalp can increase blood circulation to the hair follicles, resulting in a healthier environment for hair development. This may be done with your fingertips or with a scalp massager. Applying nourishing oils like coconut, castor, or argan oil during the massage will also help to hydrate the scalp and strengthen hair strands.

Manage stress

Chronic stress can exacerbate hair loss by interrupting the growth cycle. Practices such as yoga, meditation, and deep breathing techniques can help decrease stress and improve overall wellness. Adequate sleep is also important, particularly for new parents. While it can prioritise slumber for newborns, it can help balance stress hormones and minimize hair loss.

Stay hydrated

Hydration is essential for general health, including the state of your hair. Drinking enough water keeps the scalp hydrated and ensures that hair follicles receive the nutrients they require for healthy development. You should aim to drink at least eight glasses of water per day, however, this may vary depending on activity level and body weight.

Exercise regularly

Physical exercise improves circulation, which transports oxygen and nutrients to the scalp. Exercise also helps control stress, which is a frequent cause of hair loss. Walking, swimming, or doing yoga are examples of mild workouts.

Hair supplements

Women who have substantial hair loss may benefit from postpartum hair health supplements such as biotin, collagen, and multivitamins. Before beginning any supplements, contact your pharmacist or GP to establish their safety and appropriateness.¹¹

Summary

To summarise, postpartum hair loss is a typical occurrence for many people assigned female at birth due to the abrupt reduction in oestrogen levels following childbirth. While this illness is very transient and usually cured within a year, it might be upsetting for those affected. Nutritional interventions can help reduce the severity of hair loss and promote regeneration. Iron, protein, biotin, omega-3 fatty acids, and zinc are critical elements for maintaining hair health at this time. Taking prenatal vitamins on a regular basis, eating a well-balanced diet, and treating any potential deficiencies will help with healing and hair loss. Furthermore, using stress management strategies and avoiding harmful hair habits will help you retain healthy hair. Combining these treatments can help women manage postpartum hair loss and improve their overall well-being.