Essential for proper nervous functioning and cell renewal, vitamin B12 directly influences nail health. A deficiency can lead to fatigue, difficulty concentrating and, of course, those famous streaks. Vegan diets or certain digestive disorders are often the cause. Consider fortified foods or supplements, but always under medical advice.
Thyroid in slow motion: a signal not to be ignored
The thyroid regulates our energy, body temperature and nail growth. When it slows down, nails become dry, brittle and ridged. Unexplained weight gain, sensitivity to cold, or low energy can complete the picture. A hormonal dosage (TSH, T3, T4) is often enough to see things more clearly.
Stress, a silent exhausting
Chronic stress draws on our nutritional reserves and disrupts their assimilation. Result: nails grow slower, become streaked and fragile. This phenomenon gets worse if you bite your nails or neglect your lifestyle. Taking time to breathe, move and relax can make all the difference.
Disturbed digestion that blocks absorption
Even with a balanced diet, an unregulated digestive system can limit the absorption of vitamins. Bloating, irregular transit, abdominal discomfort… these signs may be accompanied by streaks on the nails. Focus on fiber, simple foods and learn to listen to your stomach.
Biting your nails: a destructive habit
This often mechanical gesture damages the nail matrix, causing persistent streaks and sometimes infections. Linked to stress or boredom, it weakens the very structure of the nail. Bitter-tasting varnishes or stress management techniques can help you get rid of them for a long time.
A message to take care of yourself
Vertical streaks on the nails are usually benign, but they never occur by chance. Whether linked to stress, a deficiency or a digestive imbalance, they invite us to listen better to our body. Next time you observe them, just ask yourself: what do I really need today?
