What happens when adding water to whole milk?

In this brief guide, we are going to answer the question “what happens when adding water to whole milk” with an in-depth analysis of the results of adding water to the whole milk among which the main consequence is the inadequate supply of nutrients through the diluted whole milk. Moreover, we are going to highlight how diluted whole milk can be harmful and what are the benefits of consuming whole milk without any added water.

What happens when adding water to whole milk?

The addition of water in whole milk can result in the alteration of both the levels of the nutrients inside the milk as well as the consistency or thickness of the whole milk. Milk is a complete meal with the proper balance of macro-and micro-nutrients required for health.

Adding water to it can lower the concentration of nutrients and pose several stomach problems to the consumers.

Adding water to whole milk:

Whole milk is a product obtained from animals, such as cows, goats, and camels, without any component removed from it. Whole milk from every source has a specific range of macronutrients (carbohydrates, fats, and proteins) and micronutrients (vitamins and minerals) in it.

The addition of water in the whole milk dilutes the nutritional substances present in it to the extent that the whole milk becomes disable in providing the adequate amounts of these nutrients required by the body.

Moreover, it will also change the consistency or thickness of the milk that is required to be appropriate when milk is used for drinking or different cooking purposes. For instance, the curd formed from milk added with water will have different thicknesses, maybe not like, as compared to that made from whole milk with proper composition.

Diluting whole milk:

Water when added increases the volume of whole milk and the same volume of diluted whole milk will give fewer components as compared to the same volume of whole milk without any added water. By diluting the whole milk, the nutrients will not be present in sufficient amounts in whole milk to fulfill the requirements of an individual.

Some people might associate the dilution with a fat percentage but these are quite different things. In the case of milk with different fat percentages, water is not added to whole milk instead, the fats have been removed from the milk. If you want to reduce fats by adding water, keep in mind that along with fats, other nutrients will also be reduced in the whole milk.

For children:

Milk is a nutrient-dense food product which means that it is packed with a lot of nutrients essential for healthy growth and development. For children, the nutritional requirement is low as compared to adults.

Therefore, some people dilute the whole milk by adding water into it to bring the nutrients to the level that can fulfill the needs of children without overloading nutrients. It may also be diluted to make the consistency of milk thin as most children cannot digest whole milk thickened with nutrients and fats.

Problems with diluted milk:

Several problems have been associated with the addition of water in whole milk among which the most important is the dilution of nutritional substances present in it.

Another issue resulting from the ingestion of diluted whole milk is mainly prevalent among those having stomach sensitivity. This may happen because excessive water consumption with milk can slow down the digestion of milk proteins as more acid is produced in the stomach for metabolizing the same amount of milk.

Whole milk:

Milk is a food product that is considered a complete meal in terms that it has an appropriate ratio of all the nutrients, including carbohydrates, proteins, fats, vitamins, and minerals.

The most important sugar is lactose that can be problematic in many people due to the problems of digesting this sugar. The major constituent that is naturally present in milk is water, comprising about 87% of the milk.

You can read about different types of milk here.

Benefits of milk:

Milk is a food that is dense in different nutrients required for the proper growth and development of an individual. It means that one can have all the nutrients to meet the needs by consuming this food product in a daily diet.

Milk is also known to contain a lot of quality proteins that contain almost all the essential amino acids required for proper health. These amino acids can help in the building of muscle mass of the body throughout life, thus reducing age-related muscle loss and promoting muscle repair.

Different micronutrients, such as calcium, vitamin D, magnesium, and phosphorus are also present in enough amounts in milk and provide support to bone health. By supplementing the daily intake with milk, one can prevent the problems of osteoporosis and fractures caused by weak bones.


In this brief guide, we answered the question “what happens when adding water to whole milk” with an in-depth analysis of the potential benefits of the whole milk when consumed daily. Moreover, we discussed what are the consequences of adding water to the whole milk and how these consequences can be problematic for consumers.



Mahnoor Asghar is a Clinical Nutritionist with a bachelor's degree in Nutrition and Dietetics. She is compassionate and dedicated to playing her part in the well-being of the masses. She wants to play a fruitful role in creating nutrition and health-related awareness among the general public. Additionally, she has a keen eye for detail and loves to create content related to food, nutrition, health, and wellness.