Dairy

A modern dairy campus in the Netherlands

Dairy refers both to a type of agricultural facility and to the category of food products derived from milk. In the agricultural sense, a dairy is a place where cattle, especially dairy cows, are raised for the purpose of producing milk. Milk harvested from these animals is processed into a variety of dairy products including cheese, butter, yogurt, cream, and more.

Dairy plays a central role in human nutrition and food culture, providing essential nutrients such as calcium, vitamin D, potassium, and protein. Dairy farms can range from small, family-run operations to large-scale industrial facilities.

Nutrition[edit]

Glass of milk on tablecloth

Dairy products offer a rich source of vital nutrients important for growth, development, and maintaining health throughout life.

Calcium – Essential for the development and maintenance of strong bones and teeth. It also plays a role in muscle contraction, nerve transmission, and blood clotting.
Potassium – Helps maintain healthy blood pressure and is found in fluid milk, yogurt, and soymilk (soy beverage).
Vitamin D – Supports the absorption of calcium and phosphorus. Fortified milk and soymilk are important sources. It also plays a role in immune function.
Protein – Found abundantly in milk, essential for the building and repair of body tissues.
Riboflavin (Vitamin B2) – Important for energy production and cellular function.
Vitamin B12 – Supports the production of red blood cells and neurological function.
Phosphorus, magnesium, zinc, selenium, and choline – Important for a variety of metabolic processes and cell signaling.

Consuming three cups (or the equivalent) of low-fat or fat-free dairy products daily is recommended in many national dietary guidelines.

Health Benefits[edit]

The regular consumption of dairy products offers several documented health advantages:

Supports the development of peak bone mass in children and adolescents, reducing the risk of osteoporosis later in life.
Contributes to cardiovascular health when consumed in low-fat or fat-free forms.
May help lower blood pressure when part of an overall healthy eating pattern.
Provides a high-quality protein source for muscle maintenance and repair.
Certain fermented dairy products like yogurt contain probiotics which may support gut health.

Dairy Products[edit]

File:Різні види молочних продуктів українського виробництва.jpg

Various dairy products including cheese, milk, and yogurt

The most common dairy products include:

Milk – Available in whole, low-fat, and skim varieties.
Cheese – Includes hard, soft, aged, and fresh cheeses made from different types of milk.
Butter – Made by churning milk or cream to separate the butterfat.
Yogurt – Produced by fermenting milk with specific bacterial cultures.
Cream – A rich, fatty part of milk that rises to the top and can be processed into products like whipped cream or sour cream.
Ice cream – A sweetened, frozen dairy dessert made from cream or milk.

Saturated Fat and Cholesterol[edit]

While dairy offers numerous health benefits, it's important to manage intake of certain components:

Some dairy products, such as whole milk and full-fat cheese, are high in saturated fat and cholesterol.
Diets high in saturated fat can raise LDL cholesterol (low-density lipoprotein), often referred to as “bad cholesterol,” which increases the risk of coronary heart disease.
Choosing low-fat or fat-free options reduces intake of saturated fat without compromising nutritional benefits.
High intake of fat-rich dairy may contribute to excess caloric intake, which can lead to obesity if not balanced with physical activity.

Dairy Alternatives[edit]

For individuals who are lactose intolerant or who follow a vegan diet, several non-dairy alternatives are available:

Soymilk, almond milk, rice milk, and oat milk are plant-based milk alternatives, often fortified with calcium, vitamin D, and B12.
Non-dairy yogurt, cheese, and ice cream alternatives are also commonly available.

Dairy Industry[edit]

The dairy industry encompasses the production, processing, and distribution of milk and milk-based products. It is a major sector of the agricultural economy in many countries. Major concerns related to the industry include:

Animal welfare
Environmental impact – including greenhouse gas emissions and land use.
Sustainability practices – such as water conservation and feed efficiency.

Dairy and Public Health[edit]

Health authorities such as the World Health Organization and the United States Department of Agriculture advocate for the inclusion of dairy in a balanced diet. However, public health recommendations also encourage limiting saturated fat by choosing low-fat or non-fat options.