For many people, this can affect confidence, especially if they previously had thick, full hair. Understanding why thinning happens is the first step toward managing it and finding practical ways to support healthier-looking hair.

The Science Behind Hair Growth

Hair growth follows a continuous cycle made up of growth, rest, and shedding phases. Each strand grows from a follicle beneath the scalp, and the strength and size of these follicles determine hair thickness. As we age, follicles can shrink or become less active, leading to finer strands and slower regrowth. Factors such as hormone levels, nutrient delivery, and inherited traits all influence how well these follicles function over time.

Common Causes Of Hair Thinning In The Elderly

Several age-related factors contribute to thinning hair. Hormonal changes, especially shifts in estrogen and androgen levels, are a major cause. Medical issues such as thyroid imbalance, vitamin deficiencies, and certain scalp conditions can worsen the problem. Long-term exposure to heat styling, chemical treatments, and tight hairstyles may also weaken hair structure, making strands more prone to breakage and loss.