Why have my once strong nails become weak and brittle?

i've always had really strong nails that never broke and were even hard to bend. recently, in the past month, they have become very brittle and one or more chips or breaks almost everyday. what might be causing this?Why have my once strong nails become weak and brittle?
It could be a deficiency in calcium.





Check your calcium intake, if it is low, than supplement with calcium. if after a month that doesnt work. Try supplementing with silicea. This will make your nails very strong.Why have my once strong nails become weak and brittle?
It's all in your diet. Eat more protein, it is he building block of what your nails are made out of. Eggs are good, also just a balanced simple diet with a vitamin pill every day. Also, don't ever get manicures, they sand down your natural nail and weakens it even more.
It could be that you don't have enough calcium or if you have bad allergies right now that could be making your nails weaker.