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What are the side effects of cutting out dairy?

4 min read

According to the U.S. National Library of Medicine, roughly 65% of the world's population has a reduced ability to digest lactose after infancy, suggesting that cutting out dairy might be a necessary step for many. Understanding what are the side effects of cutting out dairy is crucial before making this dietary change.

Quick Summary

This article explores the potential consequences of eliminating dairy, including risks of nutrient deficiencies, shifts in gut bacteria, hormonal changes, and the importance of finding adequate nutritional substitutes.

Key Points

  • Nutrient Deficiencies: Cutting out dairy can lead to deficiencies in calcium, vitamin D, and B12, which must be replaced through fortified foods or supplements.

  • Digestive Changes: Those with lactose intolerance may see a reduction in bloating and gas, but the loss of probiotics from fermented dairy can cause temporary digestive upset.

  • Skin Health: Many report clearer skin after going dairy-free, potentially due to reduced IGF-1 levels, but individual results can vary.

  • Weight and Energy: Weight can fluctuate depending on what substitutes are chosen, and initial fatigue can occur before energy levels improve.

  • Bone Health: The risk of weakened bones (osteoporosis) increases if alternative sources of calcium and vitamin D are not adequately consumed.

  • Balanced Approach: A balanced and planned approach, often with professional guidance, is critical to prevent adverse side effects and ensure proper nutrition.

In This Article

Navigating a Dairy-Free Diet

Removing dairy from your diet, whether for health reasons, allergies, or personal preference, can lead to a variety of physiological changes. While many people report positive outcomes like reduced bloating and clearer skin, others may experience negative side effects if the transition is not managed correctly. The key is to understand these potential impacts and learn how to mitigate them by incorporating alternative nutrient sources.

Potential Nutritional Deficiencies

Dairy products are a concentrated source of several key nutrients, and eliminating them without proper planning can lead to deficiencies. Calcium, in particular, is a major concern as dairy is a primary dietary source for most people. A lack of calcium can weaken bones, increasing the risk of osteoporosis over time. Other vital nutrients found in dairy include vitamin D, vitamin B12, and riboflavin. Vitamin D is crucial for calcium absorption, while B12 is essential for nerve function and red blood cell formation. Riboflavin, or Vitamin B2, helps the body convert food into energy.

To prevent these deficiencies, it is necessary to consciously replace these nutrients through other food sources or supplements. For example, calcium can be found in dark leafy greens like kale and spinach, fortified plant-based milks, and tofu. Exposure to sunlight is a natural way to boost vitamin D, and fortified cereals or supplements can help with B12 intake. The most significant challenge lies in the density of these nutrients in dairy, making it difficult to match the intake with plant-based alternatives alone, especially without careful meal planning.

Changes to Gut and Digestive Health

One of the most immediate and noticeable side effects of removing dairy relates to digestive health. For those with lactose intolerance, cutting out dairy can lead to a significant reduction in symptoms like bloating, gas, stomach cramps, and diarrhea. These symptoms occur because the body lacks the lactase enzyme to properly break down lactose, the sugar in milk. Without the constant irritation from dairy, the gut may feel less inflamed and more settled. However, there can be a flip side. Many dairy products, especially fermented ones like yogurt and kefir, are rich in beneficial probiotics. Removing these can alter the gut microbiome, potentially leading to initial constipation or other imbalances. Replacing these with non-dairy probiotic sources like sauerkraut, kimchi, and kombucha is important for maintaining healthy gut flora.

Hormonal and Skin Changes

Dairy consumption has been linked to hormonal fluctuations and skin issues in some individuals. Milk contains hormones and growth factors that can potentially influence a person's own hormone levels, leading to mood swings and acne. For this reason, many people report clearer skin and fewer mood swings after eliminating dairy. The reduction in insulin-like growth factor 1 (IGF-1), which is present in dairy, is believed to decrease oil production in the skin and reduce acne breakouts. However, the exact link is not universally proven and individual results vary. Some may not experience any change, while others might notice dramatic improvements.

Weight Fluctuations and Energy Levels

Removing an entire food group can impact caloric and sugar intake, leading to weight changes. For those who frequently consumed high-sugar dairy products like ice cream or flavored yogurts, cutting them out may result in weight loss. However, if dairy is replaced with high-fat, high-calorie alternatives, weight gain could occur. Energy levels can also be affected. Some experience a boost in energy and reduced sluggishness, while others may feel more tired initially. This is often a withdrawal symptom, as the body adjusts to the absence of dairy's 'opiate-like' components that can have a calming effect. The side effects are usually temporary as the body adapts.

Comparison of Dairy vs. Dairy-Free Diet Outcomes

Feature With Dairy (Potential) Without Dairy (Potential)
Nutrient Intake High in Calcium, Vitamin D, B12. Risk of deficiencies if not replaced.
Digestive Symptoms Bloating, gas, cramps (for intolerant). Reduced symptoms for intolerant; temporary constipation possible.
Skin Condition Acne and breakouts in sensitive individuals. Potential for clearer skin due to less IGF-1.
Hormonal Balance Potential for hormonal fluctuations. Potential for greater stability.
Bone Health Supported by high calcium and D intake. Risk of weakened bones if calcium isn't replaced.
Energy Levels May feel sluggish due to opiate-like compounds. Initial fatigue possible, followed by increased energy.
Weight Varies, can contribute to higher sugar intake. Can lead to weight loss if high-sugar items are replaced well.

The Importance of a Balanced Approach

Regardless of the motivation for removing dairy, a balanced and informed approach is key. It is not simply about eliminating a food group but about ensuring nutritional needs are met through diverse and healthy alternatives. Consultation with a healthcare provider or a registered dietitian is highly recommended to create a comprehensive plan that prevents deficiencies and manages the transition effectively. Simply removing dairy without a plan can lead to adverse health outcomes, despite the intended benefits. The side effects of cutting out dairy can be managed and minimized with the right knowledge and strategy. For more on dietary transitions and health, consider consulting resources like the U.S. Department of Agriculture's dietary guidelines for balanced nutrition across all dietary choices.

Conclusion

Deciding to cut out dairy is a significant dietary choice that carries a range of potential side effects, both positive and negative. While it can alleviate uncomfortable digestive issues, balance hormones, and improve skin for some, it also presents risks of nutritional deficiencies, particularly in calcium, vitamin D, and vitamin B12. The initial adjustment period might include temporary fatigue or changes in gut health. By proactively addressing nutrient needs with proper supplementation and planning, and by seeking professional guidance, individuals can successfully navigate a dairy-free lifestyle while mitigating the potential pitfalls. An informed approach is the best way to ensure the transition supports overall health and well-being.

Frequently Asked Questions

The most common side effect, especially for those with lactose intolerance, is a noticeable reduction in digestive issues like bloating, gas, and stomach cramps. For others, the initial impact might be the risk of nutritional deficiencies if not managed properly.

Initial side effects, such as temporary fatigue, mood swings, or digestive changes, typically last anywhere from a few days to a couple of weeks as your body adjusts. The duration depends on your previous dairy consumption and individual physiology.

Yes, for many individuals, eliminating dairy can lead to clearer skin. Some evidence suggests that certain components in milk, like IGF-1, can increase sebum production and worsen acne. However, the link is not proven for everyone, and results vary.

When you cut out dairy, you lose significant sources of calcium, vitamin D, vitamin B12, and riboflavin. It is crucial to replace these nutrients through fortified plant-based products, other foods, or supplements to maintain health.

While not a true intolerance, some people may experience worsened symptoms upon reintroducing dairy after a period of elimination. This is because the body produces less lactase when not consuming lactose, making it less equipped to handle it when reintroduced.

You can get enough calcium without dairy by incorporating fortified plant-based milks, tofu, dark leafy greens (like kale and spinach), edamame, and almonds into your diet. Adequate vitamin D is also needed for calcium absorption.

Your energy levels may be affected in the short term. Some people experience initial fatigue as a withdrawal symptom, while others report a long-term increase in energy by avoiding the 'opiate-like' calming effects some experience from dairy.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.