Health-care costs for retirees are on the rise again, a new study from Fidelity Investments reports. According to the Fidelity study released in August, a 65-year-old couple retiring in 2017 will need $275,000 to cover health-care costs during their retirement years. This cost is 6% higher than it was in Fidelity’s 2016 report. The 6% cost increase corroborates findings by…