Health can absolutely change your hair.
I have systemic lupus and my hair has suffered tremendously. Thankfully it's growing back with the help of Rogaine and biotin.
First, if you really notice a huge change, you need so see your doctor. Hair loss can be a sign of a medical condition- anything from hypothyroid, anemia, lupus, alopecia, stress, hormonal disruption, medications, etc, etc. Our hair is indicative of our overall health.
do you take birth control pills, anti-depressants, high blood pressure medication, etc? All can affect your hair.
Are you having any other health problems?
How's the weather where you live? Is it new to you?
In the meantime, baby your hair. Love it, pet it and call it George, Or whatever you want to call it. =)
What products are you using? Are you CG? If not, consider it.
Removing detergent based shampoo will only improve your hair. If you're using silicone based conditioners, the silicone isn't allow moisture to penetrate the hair and it requires detergent to remove it. Nasty cycle if you're already having hair problems.
When you're trimming the split ends, be sure your scissors are super sharp otherwise you're not really helping your hair any.. not getting a clean break but more like a tear.
Be sure you're eating enough protein and that you're not anemic.
Put a filter on your shower.
Hair needs protein to hold on to moisture. But too much protein will cause your hair to become dry and strawlike.
At the same time, overconditioning can make your hair look dry and strawlike too.
livecurlylivefree.com is a great site. You can learn all how your hair and its needs.
to learn about hair loss in women