Hair Health 101: Understanding Hair Growth and the Nutrients That Support It

Good hair days don’t just happen by chance. From shine and strength to fullness and thickness, the look and feel of your hair are influenced by many factors—including how your hair grows and the nutrients that support the scalp and follicles. 

While genetics and styling habits play a role, understanding the basics of hair health can help explain why nutrition and targeted nutrients are often part of the conversation around supporting healthy-looking hair. 

 

Understanding the Hair Growth Cycle 

Hair strands are primarily made of keratin, a structural protein produced within follicles in the scalp. These follicles are responsible for forming each strand of hair, and they do so through a natural cycle of growth, transition, and rest that repeats over time. 

The longest stage of this cycle is the growth phase (anagen), when the hair strand forms within the follicle and continues to lengthen. This phase can last several years and helps determine how long hair can grow. 

Next comes a short transition phase (catagen), when the follicle begins to slow hair production. The strand then enters the resting phase (telogen) before eventually shedding and making way for a new hair to begin forming. 

Because each follicle moves through this cycle independently, it’s normal to shed hair every day as part of this ongoing renewal process. The balance between growth and shedding helps influence the overall appearance of hair fullness and density over time. 

Supporting the follicles and scalp that anchor hair—including the skin and surrounding connective structures—relies on a variety of nutrients that help maintain normal skin function and protein metabolism. For this reason, certain nutrients are often highlighted in discussions of hair and scalp health. 

 

Nutrients Commonly Associated with Hair and Scalp Health 

A variety of nutrients contribute to normal skin and scalp function, which can influence the overall appearance and condition of hair. 

Protein 

• Hair strands are primarily composed of keratin, a structural protein. Consuming adequate protein as part of a balanced diet helps support normal tissue structure.   

Biotin 

• Biotin plays a role in normal protein metabolism and helps support healthy hair as you age.†   

Zinc 

• Zinc helps maintain healthy skin and immune function and contributes to normal skin oil production.†   

Vitamin D 

• Vitamin D supports healthy aging and contributes to overall wellness.†   

Silicon 

• Silicon is involved in connective tissue structure and is commonly included in formulas designed to support hair and skin.†   

Hyaluronic Acid 

• Hyaluronic acid helps support skin hydration, which may contribute to a healthy scalp environment.†   

These nutrients can be found in foods such as nuts, seeds, legumes, whole grains, vegetables, and seafood. 

 

Supporting Hair Health from the Inside Out 

While many of these nutrients can be obtained through food, some people choose to complement their diets with targeted nutrients designed to support hair and scalp health. 

Hair support formulas often combine nutrients that support skin hydration, connective tissue structure, and normal protein metabolism—factors associated with the appearance of fuller, thicker-looking hair. 

MegaFood Hair Growth Capsules features Lustriva™, a patented blend of bonded arginine silicate and magnesium biotinate that delivers bioavailable forms of silicon and biotin. Lustriva™ is clinically studied to support existing hair growth for fuller, thicker hair in women in as few as 3 weeks. †   

The formula also includes hyaluronic acid to help nourish a healthy, hydrated scalp, along with nutrients such as vitamin D3, zinc, selenium, and vitamin A to support overall hair and skin health. †   

For those interested in supporting hair wellness more broadly, collagen supplements can also provide structural proteins associated with hair, skin, and nail health. †   

 

The Bottom Line 

Hair growth happens in cycles, and the appearance of hair—including its fullness and thickness—is influenced by many factors over time. Supporting the health of the scalp, follicles, and surrounding tissues is one way to help maintain healthy-looking hair. Along with balanced nutrition and thoughtful hair care, targeted nutrients can play a role in supporting hair and scalp wellness from the inside out. 

Explore MegaFood Hair Growth Capsules and collagen formulas to learn more about nutrients that support healthy and full hair growth.