Exhibit 99.1

DEAN FOODS REPORTS FIRST QUARTER 2014 RESULTS

DALLAS, May 8, 2014 – Dean Foods Company (the “Company”) (NYSE: DF) today announced first quarter 2014 results.

The Company reported a first quarter 2014 loss from continuing operations attributable to Dean Foods of $0.09 per share, compared to first quarter 2013 earnings of $5.30 per share. On an adjusted basis, the first quarter 2014 diluted loss from continuing operations was $0.05 per share, compared to first quarter 2013 adjusted earnings of $0.31 per share.

First quarter 2014 operating income totaled $5 million, compared to first quarter 2013 operating income of $30 million. First quarter 2014 adjusted operating income totaled $7 million, compared to $74 million in the year-ago period.

“We entered 2014 facing substantial margin pressure in our milk business as Class I raw milk prices have continued to reach all-time new highs and for the quarter were 22 percent higher than last year, said Gregg Tanner, Chief Executive Officer of Dean Foods. “We reported first quarter results that were below our previously articulated adjusted diluted earnings per share guidance range of approximately break-even with $0.03 of potential risk or benefit. We estimate that during the quarter we had a negative impact associated with weather disruptions, in the form of lost school milk business and incremental costs of approximately $4 million or $0.03 of diluted earnings per share. Despite this challenging quarter, we are actively working to extend our competitive advantages through aggressively reducing costs and enhancing our strengths and capabilities.”

Net loss attributable to Dean Foods totaled $9 million for the first quarter of 2014. On an adjusted basis, first quarter net loss attributable to Dean Foods totaled $5 million.

Net sales for the first quarter of 2014 totaled $2.3 billion, compared to $2.3 billion of net sales in the first quarter of 2013.

Due to the previously disclosed loss of business from a large retailer, Dean Foods’ unadjusted fluid milk volumes declined 6.7 percent on a year-over-year basis. Excluding the previously announced loss of business from that major customer and another customer’s decision to vertically integrate its dairy operations last year, Dean Foods’ milk volumes increased 1.1 percent in the quarter, significantly better than the category decline of 2.1% as previously announced volume wins take hold. Total volumes across all products declined 5.9 percent to 685 million gallons. Dean Foods’ share of U.S. fluid milk sales volume declined to 35.9 percent during the first quarter from 37.8 percent in the first quarter of 2013, due principally to volume losses associated with a bid, or RFP, for a significant customer in which the Company lost volume commencing in the second quarter of 2013. However, since bottoming out in the third quarter of 2013, Dean Food’s share of U.S. fluid milk sales volume has increased approximately 1 percent. Industry fluid milk volumes declined approximately 2.1 percent year-over-year in the first quarter on an unadjusted basis, based on USDA data and company estimates.

The Company continues to make solid progress against its cost reduction efforts. The Company closed eight plants in 2013 and has since announced three additional closures, two of which were announced in April. As of the end of the first quarter, eight of the announced plants have ceased operations.

The first quarter 2014 average Class I Mover, a measure of raw milk costs, was $22.38 per hundred-weight, an all-time quarterly high and an increase of 22 percent from the first quarter of 2013, and 12 percent above the fourth quarter 2013 level.

CASH FLOW

Consolidated net cash from continuing operations for the three months ended March 31, 2014, totaled $33 million. Free cash flow from continuing operations, which is defined as net cash provided by or used in continuing operations less capital expenditures, was $5 million for the three months ended March 31, 2014. On an adjusted basis, which excludes certain other items as outlined within the reconciliation tables below, Dean Foods generated $11 million in free cash flow through the first three months of 2014.

NET DEBT

Total debt at March 31, 2014, net of $58 million cash on hand, was approximately $906 million. The Company’s funded net debt to EBITDA ratio calculated in accordance with its credit agreements was 2.75 times as of the end of the first quarter of 2014.

SHARE REPURCHASES

During the first quarter of 2014, the Company repurchased approximately 1.7 million shares of its common stock at an average purchase price of $14.45 per share.

FORWARD OUTLOOK

“Turning to the forward outlook, we expect the second quarter to be particularly difficult given historically high raw milk costs, continued overlaps of the RFP driven volume loss, and category declines that may be worse than recent run rates,” continued Tanner. “However, as we lap the most difficult challenges and our cost reduction efforts continue to take hold, we expect results to strengthen in the back half and exceed 2013 performance in the third and fourth quarters.

“Taking all of these factors into account and looking ahead to the balance of the year, many challenges remain and thus our forward guidance will reflect a cautious tone. All told, we expect a second quarter adjusted diluted loss per share of $0.02 to $0.08. Based on our performance for the first quarter, as well as our expectations for the second, we are lowering our full year guidance to at least $0.60. This full-year guidance is predicated on a moderation of Class I prices beginning in June with an end of the year assumption of $20-21 per hundred- weight. Beyond the Class I milk assumption there are a number of additional interdependencies embedded in our full year guidance as we begin to decline from these historic raw milk costs.

“We remain comfortable with our prior adjusted free cash flow guidance of at least $125 million and our leaving our full year capital expenditure forecast unchanged at $150 to $175 million.”

CONFERENCE CALL/WEBCAST

A webcast to discuss the Company’s financial results and outlook will be held at 9:00 a.m. ET today and may be heard live by visiting the “Webcast” section of the Company’s website at http://www.deanfoods.com/. A slide presentation will accompany the webcast.

ABOUT DEAN FOODS

Dean Foods^® is a leading food and beverage company in the United States and is the nation’s largest processor and direct-to-store distributor of fluid milk. Headquartered in Dallas, Texas, the Dean Foods portfolio includes TruMoo^®, the leading national flavored milk brand, along with well-known regional dairy brands such as Alta Dena^®, Berkeley Farms^®, Country Fresh^®, Dean’s^®, Garelick Farms^®, LAND O LAKES^® milk and cultured products*, Lehigh Valley Dairy Farms^®, Mayfield^®, McArthur^®, Meadow Gold^®, Oak Farms^®, PET^®**, T.G. Lee^®, Tuscan^® and more. In all, Dean Foods has more than 50 local and regional dairy brands and private labels. Dean Foods also makes and distributes ice cream, cultured products, juices, teas, and bottled water. Nearly 18,000 employees across the country work every day to make Dean Foods the most admired and trusted provider of wholesome, great-tasting dairy products at every occasion. For more information about Dean Foods and its brands, visit www.deanfoods.com.

FORWARD LOOKING STATEMENTS

Some of the statements in this press release are “forward-looking” and are made pursuant to the safe harbor provision of the Private Securities Litigation Reform Act of 1995. These “forward-looking” statements include statements relating to, among other things, (1) projected sales (including specific product lines and the Company as a whole), profit margins, net income, earnings per share, free cash flow and debt covenant compliance, (2) the Company’s regional and national branding initiatives, (3) the Company’s innovation and research and development plans, (4) the Company’s cost-savings initiatives, including plant closures and route reductions, and the Company’s ability to accelerate any such initiatives, (5) the Company’s plans related to its leverage, (6) the Company’s planned capital expenditures, (7) the status of the Company’s litigation matters, (8) the impact of divestitures, including the sale of Morningstar and tax payments related thereto and the divestiture and spin-off of the Company’s former subsidiary, The WhiteWave Foods Company, (9) the Company’s planned dividend policy, (10) commodity prices and other input costs, and (11) possible repurchases of shares of the Company’s common stock. These statements involve risks and uncertainties that may cause results to differ materially from the statements set forth in this press release. Financial projections are based on a number of assumptions. Actual results could be materially different than projected if those assumptions are erroneous. The cost and supply of commodities and other raw materials are determined by market forces over which we have limited or no control. The Company’s ability to meet targeted financial and operating results, including targeted cost reductions, sales, operating income, net income, debt covenant compliance, financial performance and earnings per share depends on a variety of economic, competitive and governmental factors, including raw material availability and costs, the demand for the Company’s products, and the Company’s ability to access capital under its credit facilities or otherwise, many of which are beyond the Company’s control and which are described in the Company’s filings with the Securities and Exchange Commission, including the Company’s most recent Forms 10-K and 10-Q. The Company’s ability to profit from its branding initiatives depends on a number of factors including consumer acceptance of the Company’s products. The declaration and payment of cash dividends under our dividend policy remains at the sole discretion of the Board of Directors or a committee thereof and will depend upon our financial results, cash requirements, future prospects, applicable law and other factors that may be deemed relevant by the Board or such committee. For other risks and uncertainties that may cause actual results to differ from the forward-looking statements contained in this press release, see the “Risk Factors” section of the Company’s most recent Annual Report on Form 10-K filed with the SEC. The forward-looking statements in this press release speak only as of the date of this release. The Company expressly disclaims any obligation or undertaking to release publicly any updates or revisions to such statements to reflect any change in its expectations with regard thereto or any changes in the events, conditions or circumstances on which any such statement is based.

NON-GAAP FINANCIAL MEASURES

In addition to the results prepared in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”), we have presented certain adjusted financial results and certain other non-GAAP financial measures, including Adjusted EBITDA, Free Cash Flow and Adjusted Free Cash Flow, each as defined below. These non-GAAP financial measures are from continuing operations and are adjusted to eliminate the net expense, net gain and cash flow impacts related to the items identified in the “Reconciliation of GAAP to Non-GAAP Information” tables below. This information is provided to assist investors in making meaningful comparisons of our operating performance between periods and to view our business from the same perspective as our management. Because we cannot predict the timing and amount of charges associated with certain non-recurring items; asset impairment charges; gains or losses related to discontinued operations and divestitures; deal, integration and separation costs; facility closing, reorganization and realignment costs; litigation settlements; and certain other charges, as well as the timing and amount of any cash outflows or inflows associated with such items, our management does not consider these items when evaluating our performance, when making decisions regarding the allocation of resources, in determining incentive compensation for management, or in determining earnings estimates.

We have defined Adjusted EBITDA as net income attributable to Dean Foods, which is the most comparable GAAP financial measure, adjusted for the items above as well as interest, taxes, depreciation and amortization. We believe Adjusted EBITDA is a useful measure for analyzing the performance of our business and is an indicator of our ability to incur and service indebtedness and generate free cash flow. We also believe that EBITDA measures are commonly reported and widely used by investors and other interested parties as measures of a company’s operating performance and debt servicing ability because such measures assist in comparing performance on a consistent basis without regard to capital structure, depreciation or amortization (which can vary significantly) and non-operating factors (such as historical cost). EBITDA is also a widely-accepted financial indicator of a company’s ability to incur and service indebtedness. The reconciliation of net income to Adjusted EBITDA for the three months ended March 31, 2014 and 2013 is included in the tables below.

Additionally, we believe free cash flow provided by (used in) continuing operations (“Free Cash Flow”) and adjusted free cash flow provided by (used in) continuing operations (“Adjusted Free Cash Flow”) are meaningful non-GAAP measures that offer supplemental information and insight regarding the liquidity of our operations and our ability to generate sufficient cash flow above what is required in our business to sustain our operations.

We define Free Cash Flow as net cash provided by (used in) continuing operations less cash payments for capital expenditures.

We define Adjusted Free Cash Flow as Free Cash Flow adjusted for the impact on operating cash flows related to certain significant or non-recurring items, including income taxes paid on the divestiture of Morningstar; litigation payments; payments associated with our restructuring, reorganization and realignment activities; transaction costs and other separation costs resulting from the Morningstar divestiture and WhiteWave spin-off in 2013; income tax payments related to certain deferred intercompany transactions between us and WhiteWave which were recognized by us upon completion of the WhiteWave spin-off; and other increases in or reductions to income tax payments associated with the adjustments described above. Additionally, the computation of Adjusted Free Cash Flow for the three months ended March 31, 2013 has been further adjusted to exclude the net impact on working capital of accounts receivable and accounts payable associated with our transitional services agreements with WhiteWave and Morningstar, as well as the movement of WhiteWave and Morningstar trade accounts receivable and trade accounts payable from intercompany transactions (which were previously eliminated in consolidation) to third-party transactions in 2013. A reconciliation of net cash used in continuing operations, which is the most comparable U.S. GAAP financial measure, to Adjusted Free Cash Flow, is included in the tables below.

This non-GAAP financial information is provided as additional information for investors and is not in accordance with, or an alternative to, GAAP. Additionally, these non-GAAP measures may be different than similar measures used by other companies. We believe that the presentation of these non-GAAP financial measures, when considered together with our GAAP financial measures and the reconciliations to the corresponding GAAP financial measures, provides investors with a more complete understanding of the factors and trends affecting our business than could be obtained absent these disclosures. A full reconciliation of our results and financial measures reported in accordance with GAAP for the three and twelve months ended December 31, 2013 and 2012 to the non-GAAP financial measures described above is set forth herein.

CONTACT: Corporate Communications, Jamaison Schuler, +1-214-721-7766; or Investor Relations, Tim Smith, +1-214-303-3713

DEAN FOODS COMPANY

Condensed Consolidated Statements of Operations

(Unaudited)

(In thousands, except per share data)

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Computation of Adjusted EBITDA

(Unaudited)

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Condensed Consolidated Balance Sheets

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Condensed Consolidated Statements of Cash Flows (GAAP Basis)

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Reconciliation of Net Cash Provided by (Used in) Continuing Operations

to Adjusted Free Cash Flow Provided by (Used in) Continuing Operations

(Unaudited)

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Reconciliation of GAAP to Adjusted Earnings

(Unaudited)

(In thousands, except per share data)

For the three months ended March 31, 2014 and 2013, the adjusted results and certain other non-GAAP financial measures differ from the Company’s results under GAAP due to the exclusion of net gains or net losses associated with certain non-recurring items, including asset impairment charges; discontinued operations; integration and separation expenses; as well as facility closing, reorganization and realignment costs. These adjustments are made to facilitate meaningful comparisons of our operating performance between periods as the Company cannot predict the timing and amount of charges associated with such items.