That does seem young to have a kidney infarction. Do you have any residual affects from that or do the doctors know why you have it? We all are at a n increased risk for high blood pressure.
Hello and welcome to the forum. We always recommend an annual physical which can help detect if there are changes in blood pressure. Increasing age is a risk factor for developing hyper tension. Here is a full list of risks. https://www.webmd.com/men/guide/high-blood-pressure.
You had a real infarction at 35? That must have been a scary episode. Did you lose renal function from this? Do they have any understanding as to why this happened and at such a young age?