I've a cat I took responsibility for a year ago. He is now 2 years old. He was 'fixed' before I got him. He was never declawed. He is usually REALLY good about not scratching furniture or things he shouldn't. Until Saturday morning. I left my closet open a crack, and he is a curious fellow, and loves the closet for some reason.
Defects in the chromosomes can cause premature menopause. For example, women with Turner's syndrome are born without a second X chromosome or without part of the chromosome. The ovaries don't form normally, and early menopause is often the result.
Thyroid disease also can cause your periods to stop for several months or longer, a condition called amenorrhea. If your body's immune system causes thyroid disease, other glands, including your ovaries, may be involved. This can lead to early menopause (before age 40). Problems getting pregnant.