Little body hair: Causes, normality and what can be behind it

Some people naturally have dense body hair, others barely visible little hairs on arms, legs or chest. Little body hair is in the vast majority of cases a quite normal variant of the human appearance and no reason for worry. Nevertheless many wonder whether sparse hair says something about genes, hormones or health. In this guide we sort out what steers hair growth on the body, when a change belongs in a doctor's hands and how you care for your skin and hair in everyday life.

What is behind little body hair?

How strongly hairs grow on the body is to a large part genetically determined. Familial predisposition, ethnic origin and the individual sensitivity of the hair follicles towards hormones determine whether someone develops a lot or little body hair. People from various regions of the world differ clearly here, without one or the other being healthier.

A central role is played by the androgens, above all testosterone and its derivative dihydrotestosterone. These hormones stimulate the growth of underarm, pubic and partly chest hair in puberty. How strongly the little hairs react to this depends on the receptor density in the follicles. That is why someone with a completely normal hormone level can nevertheless have little visible body hair. Age also influences hair growth: over the course of life the hairs become finer in some parts of the body.

Also important to understand is that the body hair differs in its structure. Besides the fine, barely visible vellus hair that covers almost the entire body, there is the stronger terminal hair on the head, underarms, pubic area and, in some people, on chest, belly or back. Whether and how strongly fine vellus becomes stronger hair is very different from individual to individual. A small amount of strong terminal hair therefore does not mean that something is missing, but only that the follicles are disposed differently.

Congenital or newly occurred?

For the classification it is important whether the sparse hair has always existed or has changed. If the body hair was sparse from the outset and has never noticeably shifted, it is almost always a harmless predispositional variant. If, by contrast, the hair was earlier experienced as denser and is now noticeably decreasing, a closer look is worthwhile.

With a newly occurring thinning on legs, forearms or other places various factors can play a part, for example hormonal changes, certain medications or general burdens on the body. Such observations are no reason for panic, but belong in medical hands so that the cause can be properly classified.

When you should seek medical advice

Little body hair alone is not an illness. A doctor's visit is nevertheless sensible when additional abnormalities come along. These include, for example, absent or incomplete pubertal development in adolescents, a rapid loss of already existing hair, bald spots with clear demarcation or accompanying symptoms like pronounced tiredness, weight changes, cycle disorders or changes in libido.

Also when the sparse hair burdens you psychologically strongly or you are unsure whether everything is in order, you may address it. A general practitioner, dermatologist or, if appropriate, an endocrinological practice can create clarity with a conversation, examination and, if needed, blood values. With persistent or unclear complaints, medical advice is always the right address.

For the classification it can be helpful to record some observations before the appointment: since when has the sparse hair existed, has it changed, and are there further symptoms? Such notes make the conversation easier and help the doctor to ask specifically. Information about medications taken, familial predisposition and general well-being is also valuable. The more concretely you describe your observations, the better it can be judged whether there is any further need for clarification at all or whether everything lies within the normal range.

Handling in everyday life

If your hair is sparse due to predisposition, there is medically nothing to treat. Much is a question of personal attitude and self-image. Little body hair in practice often simply means less effort with body care and is aesthetically completely unproblematic.

Anyone who wishes for more fullness should stay realistic: the number and activity of the follicles cannot be permanently changed by creams, oils or home remedies. It makes more sense to care well for the existing skin, to protect it from excessive sun and to pay attention to gentle cleansing. A mindful approach to one's own body contributes more to well-being than the attempt to outwit nature.

The type of hair removal also plays a role for many. Anyone with little body hair often has to deal less with shaving, waxing or other methods. If you nevertheless remove individual hairs, pay attention to skin-friendly procedures to avoid irritations and ingrown hairs. Redness or small pimples after shaving can mostly be reduced by sharp, clean blades and mild care afterwards. Fundamentally the rule is: there is no right or wrong measure of body hair, only that with which you feel comfortable.

Nutrition and general supply

A balanced diet is the basis for skin and hair to be supplied with everything they need. Sparse body hair cannot be transformed into dense hair with it, but a good nutrient situation supports the normal function of the hair follicles and the skin.

Rely on varied fare with enough protein, whole grain products, vegetables, fruit, nuts, seeds and high-quality fats. Protein provides the building blocks for the structural protein keratin, of which hairs consist. Anyone who eats one-sidedly or in a strongly calorie-reduced way risks gaps that can affect skin and hair in the long term.

Especially with very strict diets or a strongly one-sided diet, the body can slide into an undersupply. In such phases the organism reduces the supply of less vital areas, which can also include the hair follicles. A sufficient intake of energy, protein and micronutrients is therefore important not only for the hair, but for the whole body. Balance across the day and the week is more decisive here than individual miracle cures.

Nutrients and plants around skin and hair

Some micronutrients are linked with recognised EU statements on the maintenance of hair and skin. Thus zinc contributes to the maintenance of normal hair and additionally plays a role for a normal skin. Biotin contributes to the maintenance of normal hair and normal skin. Selenium contributes to the maintenance of normal hair. These statements refer to the maintenance of normal structures within a sufficient supply, not to a targeted boosting of hair growth.

For the skin, vitamin A, which contributes to the maintenance of normal skin, as well as niacin, riboflavin and biotin, which likewise contribute to the maintenance of a normal skin, are also relevant. Plant preparations like nettle or fenugreek are traditionally used in folk lore in connection with skin and hair, without a promise of effect being derivable from this. What matters is a realistic view: nutrients can only contribute something when a deficiency actually exists. Anyone who eats a balanced diet is as a rule well supplied, and additional high-dose preparations then bring no advantage.

With individual nutrients like iron a marked deficiency can influence the condition of hair and skin. Whether such a deficiency exists, however, cannot be read off the mirror, but can only be assessed medically via corresponding blood values. Taking higher-dosed single preparations on one's own initiative is therefore inadvisable, especially with iron, since too much can burden the body. Sensible is the path via a good diet and, with justified suspicion, via a medical evaluation.

Honestly classified

Little body hair is mostly simply a part of your individual appearance, similar to hair colour or body height. There is no remedy that demonstrably makes dense body hair out of a few little hairs, and promises in this direction you should view critically. It is sensible to pay attention to clear changes, to nourish the body well and to seek medical advice when unsure. This way the focus stays on what really counts: your well-being and a healthy skin.

Frequently asked questions (FAQ)

Is little body hair normal?

In the vast majority of cases yes. The density of body hair is strongly genetically and hormonally shaped and varies considerably from person to person. As long as the sparse hair has always existed and no further abnormalities come along, it is a harmless variant.

Can I make more body hair grow?

The number and activity of the hair follicles cannot be permanently increased by creams, oils or food supplements. A balanced diet supports the maintenance of normal hair, but does not transform predispositionally fine hair into dense body hair.

Which nutrients are important for hair?

Zinc and selenium contribute to the maintenance of normal hair, biotin additionally to the maintenance of normal skin. These statements apply within a sufficient supply. A targeted boosting of hair growth cannot be derived from this.

When should I see a doctor?

When already existing hair thins rapidly, clearly demarcated bald spots occur or accompanying symptoms like strong tiredness, weight changes or cycle disorders come along. Also with absent pubertal development or strong psychological burden, medical advice is sensible.

Is body hair connected with testosterone?

Androgens like testosterone stimulate certain body hair in puberty. How strongly the follicles react to this, however, depends on their sensitivity. That is why someone with a normal hormone level can nevertheless have little visible body hair.