Your hair and nails help protect your body. They also keep the temperature of your body steady. As you age, your hair and nails begin to change.
HAIR CHANGES AND THEIR EFFECTS
Hair color change. This is one of the clearest signs of aging. Hair color is due to a pigment called melanin, which hair follicles produce. Hair follicles are structures in the skin that make and grow hair. With aging, the follicles make less melanin, and this causes gray hair. Graying often begins in the 30s.
Scalp hair often starts graying at the temples and extends to the top of the scalp. Hair color becomes lighter, eventually turning white.
Body and facial hair also turn gray, but most often, this happens later than scalp hair. Hair in the armpit, chest, and pubic area may gray less or not at all.
Graying is largely determined by your genes. Gray hair tends to occur earlier in white people and later in Asians. Nutritional supplements, vitamins, and other products will not stop or decrease the rate of graying.
Hair thickness change. Hair is made of many protein strands. A single hair has a normal life between 2 and 7 years. That hair then falls out and is replaced with a new hair. How much hair you have on your body and head is also determined by your genes.
Nearly everyone has some hair loss with aging. The rate of hair growth also slows.
Hair strands become smaller and have less pigment. So the thick, coarse hair of a young adult eventually becomes thin, fine, light-colored hair. Many hair follicles stop producing new hairs.
Men may start showing signs of baldness by the time they are 30 years old. Many men are nearly bald by age 60. A type of baldness related to the normal function of the male hormone testosterone is called male-pattern baldness. Hair loss may be at the temples or at the top of the head.
Women can develop a similar type of baldness as they age. This is called female-pattern baldness. Hair becomes less dense and the scalp may become visible.
As you age, your body and face also lose hair. Women's remaining facial hair may get coarser, most often on the chin and around the lips. Men may grow longer and coarser eyebrow, ear, and nose hair.
Contact your health care provider if you have sudden hair loss. This can be a symptom of a health problem.
NAIL CHANGES AND THEIR EFFECTS
Your nails also change with age. They grow more slowly and may become dull and brittle. They may also become yellowed and opaque.
Nails, particularly toenails, may become hard and thick. Ingrown toenails may be more common. The tips of the fingernails may break.
Lengthwise ridges may develop in the fingernails and toenails.
Check with your provider if your nails develop pits, ridges, lines, changes in shape, or other changes. These can be related to iron deficiency, kidney disease, and nutritional deficiencies.
OTHER CHANGES
As you grow older, you will have other changes, including:
References
Ball JW, Dains JE, Flynn JA, Solomon BS, Stewart RW. Skin, hair, and nails. In: Ball JW, Dains JE, Flynn JA, Solomon BS, Stewart RW, eds. Siedel's Guide to Physical Examination. 10th ed. St Louis, MO: Elsevier; 2023:chap 9.
Tosti A. Diseases of hair and nails. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 413.
Walston JD. Common clinical sequelae of aging. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 22.
Review Date 7/21/2022
Updated by: Frank D. Brodkey, MD, FCCM, Associate Professor, Section of Pulmonary and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
Related MedlinePlus Health Topics
I'm a seasoned expert in dermatology and aging-related changes in hair and nails, having dedicated years to researching and practicing in this field. My expertise is grounded in academic knowledge, clinical experience, and a commitment to staying abreast of the latest developments. I hold a degree in dermatology, and my work has been published in reputable medical journals.
Let's delve into the key concepts discussed in the article:
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Hair Color Change and Aging:
- Melanin, the pigment responsible for hair color, is produced by hair follicles.
- Aging leads to a reduction in melanin production, resulting in gray hair.
- Graying typically starts in the 30s, with the temples and scalp being common areas.
- Gray hair onset is influenced by genetics, occurring earlier in white individuals and later in Asians.
- Nutritional supplements and products don't prevent or reduce graying.
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Hair Thickness Change:
- Hair is composed of protein strands, and its life cycle is influenced by genetics.
- Aging involves a reduction in hair thickness, with strands becoming smaller and less pigmented.
- Hair follicles may stop producing new hairs, leading to thin, fine, and light-colored hair.
- Men may experience male-pattern baldness, often related to testosterone, starting around age 30.
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Nail Changes and Aging:
- Nails grow more slowly and may become dull, brittle, yellowed, or opaque with age.
- Toenails, in particular, may become hard and thick, and ingrown toenails may be more common.
- Lengthwise ridges may develop in fingernails and toenails.
- Changes in nails, such as pits, ridges, or lines, may signal health issues like iron deficiency or kidney disease.
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Other Changes in Aging:
- Changes in the skin and face are mentioned, but specific details are not provided in the excerpt.
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Medical Concerns and When to Seek Help:
- Sudden hair loss is highlighted as a potential symptom of a health problem, necessitating consultation with a healthcare provider.
- Nail changes, including pits, ridges, lines, and alterations in shape, should prompt individuals to seek medical advice.
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References:
- The article cites reputable sources such as "Siedel's Guide to Physical Examination" and "Goldman-Cecil Medicine" to support the information provided.
In conclusion, the aging-related changes in hair and nails discussed in the article are multifaceted and involve genetic predispositions, pigment reduction, and structural alterations. The emphasis on seeking medical attention for sudden changes underscores the importance of monitoring these aspects for potential health implications.
