Observing hair loss can be alarming, yet one health professional warns that thinning hair might sometimes signal a more serious issue than just the natural aging process.

Dr. Eric Berg, a social media sensation with over 2.3 million TikTok followers, more than 30 million likes, and 14 million YouTube subscribers, recently addressed this concern in a popular video. He explained to his audience, “Hair thinning might be linked to a biotin deficiency.” Biotin, or vitamin B7, is part of the B-vitamin group and is essential for transforming food into energy. The National Institutes of Health emphasizes its importance in maintaining healthy hair, skin, and nails.

This vitamin supports keratin production, a key protein that forms the foundation of hair structure. According to the Cleveland Clinic, insufficient biotin levels may lead to hair thinning or even loss in certain cases.

Biotin is found naturally in several common foods. The NHS points out that eggs, nuts, seeds, salmon, and sweet potatoes are particularly rich sources of this nutrient.

Most individuals get enough biotin through a well-rounded diet. The National Institutes of Health suggests that adults generally need about 30 micrograms of biotin daily.

True biotin deficiency is quite uncommon. However, the Cleveland Clinic notes that people with specific digestive issues, prolonged antibiotic use, or genetic disorders might find it challenging to maintain adequate levels.

Signs of insufficient biotin can go beyond thinning hair. According to MedlinePlus, deficiency may also result in brittle nails, skin rashes and fatigue.

Hair loss itself can have numerous potential causes. The NHS says stress, hormonal changes, genetics and certain medical conditions can all contribute to thinning hair.

One of the most prevalent forms is androgenetic alopecia, also known as male or female pattern hair loss. Research cited by the American Academy of Dermatology reports this affects millions of people worldwide.

Experts say anyone experiencing sudden or severe hair loss should seek medical advice. A GP can check for vitamin deficiencies or underlying health issues with simple tests and recommend appropriate treatment.