Hair loss for 7–8 years along with constant weakness suggests there may be an underlying medical or nutritional issue rather than only a cosmetic hair problem. Since you improved while taking iron/vitamins and symptoms returned after stopping, deficiencies may still be contributing.
Common causes at your age include:
* iron deficiency/
ferritin deficiency
*
vitamin D deficiency
* low
B12
*
thyroid disorders
* stress/anxiety
* hormonal imbalance like Polycystic Ovary Syndrome
* female pattern hair loss
* poor protein intake
Longstanding hair thinning with poor regrowth especially needs proper evaluation instead of repeatedly taking supplements blindly.
Next Steps
You should ideally consult:
1. A physician/internal medicine doctor first for full deficiency and hormonal evaluation
AND/OR
2. A dermatologist with interest in hair disorders (trichology)
Recommended tests:
* CBC
* Serum
ferritin
* Iron profile
*
Vitamin D3
*
Vitamin B12
*
TSH, Free T3, Free T4
*
HbA1c
* Serum zinc (optional but useful in chronic hair fall)
* CMP/
LFT/KFT if weakness is significant
If periods are irregular, acne/facial hair/weight gain present, then also:
*
Testosterone
*
LH/
FSH
*
Prolactin
* Pelvic ultrasound
Health Tips
*
Ferritin for hair growth often needs to be maintained adequately for months, not just temporary treatment.
* Protein intake is very important for hair regrowth:
* eggs/paneer/dal/soy/curd/fish depending on diet
* Avoid crash dieting and severe stress.
* Excessive oil changes, hair serums, or supplements without diagnosis usually do not solve chronic hair loss.
* Sleep quality also strongly affects hair cycling and fatigue.
Since your symptoms are chronic and affecting quality of life, a detailed online consultation with review of your history, scalp pattern, menstrual history, and lab work can help identify the exact root cause and create a proper long-term hair recovery plan instead of repeated temporary supplementation.