Brief Answer:
Change of attitude,/lifestyle & needful treatment with expert care..

Detailed Answer:
Hi XXXX,
Thanks for the query under HCM forum.
I have read your query carefully, & understand your concern.
* In old age hair loss is greater than growth, The length of newly hair growth also diminishes. This is physiological due to hormonal, constitutional decline causing other signs of aging too.( So the answer to hair loss at this age is to prevent further loss by needful medication/ good hair care.)
In your case, the process was hastened due to chemotherapy, but it is known that once the therapy is stopped, new hair growth starts within 3 to 10 months.You had it years back, so chemotherapy can not be blamed for your hair problem at present.
* There are number of Causes & their treatments for hair loss ranging from ---different hair oils, protein hair treatment, treating some systemic conditions which favor hair fall ( thyroid problem), skin infection of scalp,medications causing hair fall as a side effect. Medicines for depression/ arthritis/high blood pressure, heart problems,cancer - these need to be revised by your doctor's advise/ managed by local hair care) .. to hair transplant.
- A skin specialist's advise is needful for investigations & the specific treatment for you.

* Hair care-
- Using gentle /natural hair products . Avoid using harsh chemicals.
- Use combing rather than brushing hairs.( gently, regularly)
- wash hairs at least once a week, Avoid hair drier, let the hairs air
dry.handle hairs very delicately. Oil massage done gently before
head bath,
- Include Wall nuts Omega 3 fatty acid), spinach( iron,,Halibut
( magnesium), carrots ( Vitamin A), Yogurt( Vitamin B5, D), eggs
( proteins )in your diet. If it's not possible to eat you can continue
with the multivitamin pills you are already having.--
- Avoid stress ( physical/ psychological ) practice meditation for
maintaining psychological XXXXXXX
-To do regular mild exercises ( walking/ yoga )
* Apart from this , I feel what matters is to understand age wise changes in body. Though thin/ grey hairs do cause hindrance in personality/ presentation... The growing age also offers a tinge of maturity, experience & offers respect from society.
* So my suggestion to you is-
_ consult a skin specialist to find possible medical condition & it's treatment. / change of medications already in use.
- Accept the change ,at the same time have some lifestyle changes to
favor hair growth. Try to maintain hairs that are left by hair care.
- If you are too much for normal hairs .. give a try to hair wigs
- Move with society with enthusiasm & confidence.
- Try to help people in whatever way you can. Have good friend circle.
- Go for natural means for hair care rather than harsh chemical cosmetics.
* I am sure with natural hair care measures and changed psychology & lifestyle you will overcome your present worry & lead a haooy & meaningful life.
I hope, the answer has provided sufficient information to guide your way out of the problem. Any follow up query is welcome.
If you are satisfied, Please grade the answer before you close the query
Thanks.

---