Step 1 - Rule out medical reasons.
If your hair is excessively shedding - for example, if a noticeable amount of hair strands collect on the carpet despite weekly hoovering , then consider that as a sign to do something. Rule out thyroid and other medical issues by booking a blood test with a nurse at your local GP practice. Go on, do it now. The thyroid is an important thing and if it isn’t happy then your hair will suffer and no amount of loving care will improve it, without medical help.