**Which nutrients are often lacking on a ketogenic diet, and what are the best foods to choose?**

Why it’s important to stay mindful of nutritional balance while on a ketogenic diet

The ketogenic diet is well-known for its "low-carb, high-fat, moderate-protein" approach, and many people experience great benefits for weight management and blood sugar control. However, drastically reducing carbohydrates limits your food options, which can lead to an unintentional deficiency in micronutrients. Based on our own experience trying it out, we’ve found that the "keto flu" (headaches and lethargy) and muscle cramps often experienced during the induction phase are frequently relieved by addressing electrolyte deficiencies. In this guide, we’ll highlight the nutrients that often fall short and share some practical tips on foods and supplements you can easily incorporate into your daily routine.

Nutrients We Tend to Lack and Their Impact on Our Bodies

Electrolytes (Sodium, Magnesium, and Potassium)

When glycogen levels drop during ketosis, sodium, magnesium, and potassium are easily lost along with body water, which can lead to headaches, muscle cramps, and fatigue. This is a key point highlighted in medical resources such as StatPearls.

Folate (Vitamin B9), Biotin (B7), and Choline

Folate is essential for methylation and neural tube development during pregnancy, while biotin supports the health of our skin and hair, and choline is involved in the metabolism of liver fat. When following a low-carb diet, it’s important to be intentional about our intake by focusing on leafy greens; if the diet is primarily animal-based, we can easily become deficient in folate and certain other vitamins. Research has also shown that a ketogenic diet can impact the absorption and status of some of these nutrients, so it’s something we need to be mindful of.

So, what exactly should we eat? Here are our recommendations by food category.

• Leafy greens and seaweed:Spinach, kale, wakame, and kombu are excellent sources of folate, magnesium, and potassium. We find them easy to incorporate into our meals through salads or smoothie-style low-carb dressings.
• Eggs and organ meats:Egg yolks and chicken liver are rich in biotin, folate, and choline. We also keep small portions of liver pâté on hand as a staple.
• Nuts and seeds:Almonds, walnuts, and chia seeds are great sources of magnesium and healthy fats, making them the perfect choice for snacking.
• Fatty fish:Salmon and sardines also provide us with vitamin D, omega-3s, and biotin.
• Avocado:It’s a powerful ally for the keto diet, as it allows you to get folate, potassium, and healthy fats all at once.
• Bone broth and pickles:Through salt and electrolyte replenishment, along with collagen and fermented foods, we can also support our gut environment.

**How to Choose Supplements and Important Points to Consider**

While getting all your nutrients from food alone is ideal, supplements can be very effective if a busy lifestyle or personal preferences make that difficult. For folate, we recommend 5-methyltetrahydrofolate (5-MTHF) due to its high bioavailability; choosing a B-complex supplement that contains a well-balanced mix of B vitamins is often the most convenient approach. For magnesium, forms like glycinate or citrate are well-absorbed, and taking smaller, divided oral doses throughout the day is gentler on the system. You can adjust your sodium levels by adding a little more salt to your cooking or by incorporating bone broth. Finally, since high-dose potassium supplements can easily cause issues, please prioritize getting your potassium from food sources unless otherwise directed by a doctor.

Additionally, since Vitamin D deficiency can be detected through blood tests, those who lack sun exposure or the elderly may find peace of mind by discussing testing and supplementation with a doctor. If you are pregnant or have decreased kidney function, please be sure to consult a healthcare professional regarding the specific type and dosage of any supplements.

Final Thoughts

While the ketogenic diet is highly effective, managing your nutritional balance is the key to success. You can fill many nutritional gaps by incorporating foods like leafy greens, eggs, organ meats, fish, nuts, seaweed, and bone broth into your daily routine. It’s also helpful to use highly absorbable supplements such as 5-MTHF or magnesium glycinate when necessary, while ensuring peace of mind by regularly monitoring your physical condition and blood work. Our team continues to make adjustments through our own practice, and we’ve experienced firsthand how small, thoughtful tweaks can significantly reduce the side effects of keto.

Disclaimer: The information in this article is for general informational purposes only and does not constitute medical advice. Please consult a qualified healthcare professional before making any health-related decisions.