The Impact of Dairy on Weight Loss

By 
Dr Amit Kumar Singh
 on 
May 12, 2024
 • 
5
 min read

For many British women seeking to shed a few pounds, the role of dairy in weight loss can be a confusing topic. With conflicting information circulating about whether to include or avoid dairy products in a weight loss diet, it's essential to explore the evidence and understand how dairy might impact your weight loss journey. This comprehensive guide will delve into the relationship between dairy consumption and weight loss, examining both potential benefits and drawbacks, to help you make informed decisions about incorporating dairy into your diet.

Understanding Dairy and Weight Loss

The Role of Calories

At its core, weight loss is fundamentally about creating a calorie deficit – burning more calories than you consume. Dairy products, like any food, contribute to your overall calorie intake. However, their impact on weight loss is more complex than simply counting calories.

Macronutrients in Dairy

Dairy products contain a mix of macronutrients that can play different roles in weight management:

  • Protein: Dairy is an excellent source of high-quality protein, which is crucial for maintaining muscle mass during weight loss and promoting feelings of fullness[1] .
  • Fat: The fat content in dairy varies widely between products. While some fats are beneficial, excessive saturated fat intake may hinder weight loss efforts[2] .
  • Carbohydrates: Dairy contains lactose, a natural sugar. For some individuals, particularly those with lactose intolerance, this can impact digestion and potentially affect weight loss[3].

Calcium and Weight Management

One of the most intriguing aspects of dairy's potential impact on weight loss is its calcium content. Research suggests that calcium may play a role in regulating fat storage and promoting thermogenesis (heat production in the body)[4]

A study led by Dr Michael Zemel at the University of Tennessee found that individuals on a reduced-calorie diet who consumed three servings of dairy per day lost more weight and body fat than those who ate less dairy[5] . However, it's important to note that more research is needed to fully understand the mechanisms behind this relationship.

Potential Benefits of Dairy for Weight Loss

Increased Satiety

One of the key advantages of including dairy in a weight loss diet is its potential to increase feelings of fullness, which may lead to reduced overall calorie intake. A meta-analysis published in the European Journal of Clinical Nutrition found that consumption of dairy products, particularly yoghurt, was associated with increased satiety and reduced subsequent food intake[6] .

Muscle Preservation

Maintaining muscle mass is crucial during weight loss, as muscle tissue burns more calories than fat tissue, even at rest. The high-quality protein found in dairy products can help preserve muscle mass during calorie restriction. A meta-analysis published in Nutrients found that increased dairy intake as part of energy-restricted diets resulted in greater fat loss while attenuating lean mass loss in adults aged 18-50[7].

Potential Drawbacks of Dairy for Weight Loss

Sugar Content

While dairy contains beneficial nutrients, it's important to be mindful of the sugar content, particularly in flavoured yoghurts and milk drinks. The NHS recommends choosing unsweetened or lower-sugar options when possible[8] .

Fat Content

Full-fat dairy products can be high in saturated fat, which may contribute to weight gain if consumed in excess. The NHS advises choosing lower-fat options, such as semi-skimmed or skimmed milk, when trying to lose weight[9] .

Individual Sensitivities

For some individuals, dairy consumption can lead to digestive discomfort due to lactose intolerance or milk allergies. These sensitivities can impact overall diet quality and potentially hinder weight loss efforts. If you suspect you may have a dairy sensitivity, it's advisable to consult with your GP or a registered dietitian[10].

Making Informed Choices About Dairy and Weight Loss

Tips for Including Dairy in a Weight Loss Diet

  1. Choose low-fat or fat-free options to reduce calorie intake.
  2. Opt for plain yoghurt and add your own fresh fruit for flavour.
  3. Use milk in place of cream in recipes to reduce fat content.
  4. Include a serving of dairy with meals to increase satiety.
  5. Be mindful of portion sizes to avoid overconsumption.

Alternatives to Dairy for Weight Loss

For those who cannot or choose not to consume dairy, there are several alternatives that can provide similar nutritional benefits:

  • Fortified plant-based milks (e.g., soya, almond, oat)
  • Calcium-set tofu
  • Leafy green vegetables (e.g., kale, broccoli)
  • Nuts and seeds (particularly almonds and sesame seeds)
  • Sardines and pilchards (with bones)

Importance of a Balanced Diet and Exercise

While dairy can be a beneficial component of a weight loss diet, it's crucial to remember that sustainable weight loss relies on a balanced diet and regular physical activity. The NHS recommends at least 150 minutes of moderate-intensity aerobic activity or 75 minutes of vigorous-intensity aerobic activity per week, along with strength exercises on two or more days a week.

Conclusion

The relationship between dairy consumption and weight loss is complex and can vary between individuals. While some studies suggest that dairy may have beneficial effects on weight loss, particularly when part of a calorie-restricted diet, the evidence is not conclusive. 

For most British women, including low-fat dairy products as part of a balanced, calorie-controlled diet is likely to be beneficial for weight loss efforts. However, it's essential to consider individual factors such as lactose tolerance, overall diet quality, and personal preferences. 

Remember, there is no one-size-fits-all approach to weight loss. If you're unsure about how to incorporate dairy into your weight loss plan, or if you have specific health concerns, it's always best to consult with a registered dietitian or your GP for personalised advice. 

We'd love to hear about your experiences with dairy and weight loss. Have you found dairy products helpful in your weight loss journey? Or have you had success with dairy alternatives? Share your thoughts in the comments below! 

References:

1 Leidy, H. J., Clifton, P. M., Astrup, A., Wycherley, T. P., Westerterp-Plantenga, M. S., Luscombe-Marsh, N. D., ... & Mattes, R. D. (2015). The role of protein in weight loss and maintenance. The American journal of clinical nutrition, 101(6), 1320S-1329S.

2 NHS. (2020). Fat: the facts. Retrieved from https://www.nhs.uk/live-well/eat-well/food-types/different-fats-nutrition/

3 NHS. (2019). Lactose intolerance. Retrieved from https://www.nhs.uk/conditions/lactose-intolerance/

4 Zemel, M. B. (2004). Role of calcium and dairy products in energy partitioning and weight management. The American journal of clinical nutrition, 79(5), 907S-912S.

5 WebMD. (2004). Calcium: Drink Milk, Lose Weight? Retrieved from https://www.webmd.com/diet/news/20040416/calcium-dairy-weight-loss

6 Lluch, A., Hanet-Geisen, N., Salah, S., Salas-Salvadó, J., L'Heureux-Bouron, D., & Halford, J. C. G. (2010). Short-term appetite-reducing effects of a low-fat dairy product enriched with protein and fibre. Food Quality and Preference, 21(4), 402-409.

7 Stonehouse, W., Wycherley, T., Luscombe-Marsh, N., Taylor, P., Brinkworth, G., & Riley, M. (2016). Dairy Intake Enhances Body Weight and Composition Changes during Energy Restriction in 18–50-Year-Old Adults—A Meta-Analysis of Randomized Controlled Trials. Nutrients, 8(7), 394.

8 NHS. (2020). Sugar: the facts. Retrieved from https://www.nhs.uk/live-well/eat-well/food-types/how-does-sugar-in-our-diet-affect-our-health/

9 NHS. (2020). Milk and dairy nutrition. Retrieved from https://www.nhs.uk/live-well/eat-well/food-types/milk-and-dairy-nutrition/

10 NHS. (2019). Food allergies. Retrieved from https://www.nhs.uk/conditions/food-allergy/ NHS. (2019). Exercise. Retrieved from https://www.nhs.uk/live-well/exercise/

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