Sometimes locks can become thin at the roots. This can be for several reasons.
Hormones often dictate the thickness of hair on one’s head. As some people age, hair loss can be common. This is prevalent with biologically sexed males, but it can happen to anyone regardless of sex. Stress, diet and lifestyle also contribute to hormone levels.
Another common reason for thinned lock roots is overmaintenance.
If you suspect this may be the case for you, try to maintain your locks every two weeks at most frequent. Make sure the work isn’t too tight on your head. Some people also take a break from maintenance for a couple months to plump them up.
Tightly styling your hair, pulling on it frequently, or wearing it in a ponytail can also contribute to the problem.
Other than reducing sources of scalp tension and eating right (taking vitamins, too!), there’s not much that can be done to combat natural hair thinning. If you’re afraid of some locks falling out, you can also combine the thin locks together to make thicker roots as a measure of extra security.
One more reason you may feel that your roots are thinning is due to the maturation process of some hair types. For instance, straight hair that is allowed to mature on its own with minimal maintenance can thicken dramatically as it loops and shrinks in the first 6 months to 1.5 years.
After the shrinking has slowed, sometimes the ends will be very thick and bulky while your roots grow out a bit thinner as they don’t have room to loop and thicken as dramatically as your original, long, brushable hair did.
If your hair and scalp feel completely healthy and you can tell that you are not actually losing hair density (your parts aren’t becoming wider, your hair looks equally thick all over your head, etc) this may be a reason.
Another reason some people may experience thinning is the weight of very mature locks. Some people with butt-length locks are carrying around a lot of weight, and as with tight styling, this can put tension on the scalp. A remedy is simply trimming off the bottom 6-10 inches of hair it it alleviates a lot of tension for people!