After a blocked artery is treated with angioplasty to restore blood flow, the artery may become blocked again. This is called restenosis. One way to prevent restenosis is to place a stent inside the artery at the spot where the blockage was cleared by angioplasty. A stent is a tiny, metal mesh tube that is placed with a catheter and permanently embedded within the artery wall to prop open and prevent it from collapsing.
Associations between Agent Orange and other dioxin-contaminated herbicides and structural birth defects like spina bifida, oral clefts, heart defects and hypospadias may be just the âtip of the icebergâ.
From the research I've done, it seems that some birth control pills cause melasma and the only way to (attempt to) prevent it is to use sunscreen. I use sunscreen every day (SPF 30) and have used an age spot/dark spots facial cream for the past 6 months.