1. Ridges on nails
The cause: Vertical ridges are associated with the aging process. See your doctor if you notice horizontal ridges, as they can indicate underlying health problems such as respiratory disease, malnutrition or even heart attack risk. Vink says ridges are also often triggered by a deficiency in B vitamins, a condition common in older people.
The fix: Buffing, moisturizing and using cosmetic ridge fillers will help nails appear smoother-although they won’t impart permanent changes. While the effect of diet on nail health is not proven, Vink suggests upping your intake of meat, poultry, fish and milk products, which are rich in B vitamins.