TL;DR: annual US GDP declined 2.9% because consumers spent less. In fact, they are not yet spending at rates anywhere near the rates at which they were spending before the financial crisis in 2008. When consumers spend less, businesses in the aggregate sell less of everything, because every dollar spent by a consumer is a dollar earned by someone else -- usually a business. Before the financial crisis, consumers borr…
Actual TLDR: Spending was muted because of the harsh winter. Recent economic indicators have been very positive so expectations are for a significant rebound for Q2.
http://www.businessinsider.com/why-health-care-spending-in-g...