The Underrated Tool in Addiction Recovery

If you or someone you love is in recovery, you may have wondered how nutrition fits into the picture.

Many people are surprised to learn how much substance use affects the body's nutritional status. Supporting the body with adequate nutrition can make recovery feel more stable, more manageable, and more sustainable.

Recent research suggests that eating habits may play a direct role in recovery outcomes. People with poorer diet quality have been found to be less likely to achieve remission from substance use disorders.

Nutrition isn't just about physical health. It may influence the recovery process itself.

Malnutrition in Recovery

Malnutrition, when the body is not getting the nutrients it needs to function well, is very common in people struggling with substance use disorder (SUD).

There are many reasons for this:

• Appetite suppression from substances

• Spending money on drugs or alcohol instead of food

• Limited access to cooking or grocery resources

• Gut damage that affects nutrient absorption

• Irregular or chaotic eating patterns

One important thing to understand is this:

You can be malnourished at any body size.

Someone in recovery may appear to be eating enough, or may even be overweight, and still have significant nutrient deficiencies.

How Substances Affect the Body

Substances don't just affect the brain. They affect the entire body.

Alcohol, for example, can damage the digestive tract and interfere with the absorption of important nutrients. It can also increase nutrient losses over time.

Many drugs reduce appetite and make it difficult to eat enough food, especially enough protein and calories. Some substances, especially opiates, slow digestion and can cause gastrointestinal symptoms like constipation and discomfort.

Over time, these changes can lead to deficiencies in any of the following important nutrients:

• B vitamins

• Vitamin D

• Vitamin C

• Magnesium

• Zinc

• Iron

These deficiencies are often associated with symptoms such as:

• Low energy

• Fatigue

• Weakness

• Depression and anxiety

• Trouble concentrating

• Reduced immune function

Recovery takes mental clarity and emotional stability. Nutrient deficiencies can make both harder.

Researchers are also beginning to look at how specific nutrients might support recovery. Early studies suggest that nutrients like certain amino acids and omega-3 fats may support mental health and may help reduce relapse risk, although more research is still needed.

Cravings and the Brain

It's very common in early recovery to notice an increase in cravings for sugar and sweets.

Food and substances activate similar reward pathways in the brain. When substances are removed, the brain often looks for other sources of reward, and sweet foods can temporarily fill that role. These cravings are part of the brain's adjustment process and can be frustrating to manage.

Some people also notice that their relationship with food changes during recovery. Emotional eating or stronger food cravings can be common experiences, especially early on. Its important to understand that weight changes may also occur during this time as a result.

Nutrition Changes During Recovery

Changes in weight are common during recovery and are often part of physical healing. Certain medications used in recovery can also impact appetite and weight.

Some people find these changes stressful, and research suggests that weight gain may be linked with increased relapse risk for some individuals.

This is one reason why supportive and realistic nutrition guidance can be helpful during recovery.

The Missing Piece

Despite strong evidence supporting its role, nutrition is often only briefly addressed, or not addressed at all, in addiction treatment.

Most treatment programs focus on:

• Detox

• Counseling

• Support groups

These are essential parts of recovery. But nutrition often gets overlooked.

Supporting nutrition can help:

• Improve physical health

• Support mood stability

• Improve concentration and energy

• Improve treatment engagement

Nutrition education programs have been shown to improve diet quality during treatment, helping people eat more regularly and include more nutrient-dense foods.

We're still learning how these changes affect long-term recovery outcomes.

Thoughts from a Dietitian Who Has Worked in Recovery

Recovery is not just about removing a substance. It is about helping the brain and body heal.

And healing requires nourishment.

While working in substance use treatment, I saw how much nutrition can affect energy, mood, and stability. Improving someone's eating patterns does not solve everything, but it often makes recovery feel more manageable.

Nutrition may not be the only piece of recovery, but for many people it may be the missing piece.

If nutrition is something you've been wondering about in your own recovery, you're not alone. Many people are surprised by how much supporting the body can support the recovery process. If you'd like to learn more about nutrition and mental health, you can explore ways that a dietitian can help you in your journey here.

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References

• Jeynes KD, Gibson EL. The importance of nutrition in aiding recovery from substance use disorders: A review. Drug and Alcohol Dependence. 2017.

• Mahboub N, Rizk R, Karavetian M, de Vries N. Nutritional status and eating habits of people who use drugs and/or are undergoing treatment for recovery: A narrative review. Nutrition Reviews. 2021.

• Cabral DAR, Nist AN, Fontes RM, et al. Food for thought: The relationship between poor eating habits, delay discounting, and quality of life in substance use recovery. Eating Behaviors. 2025.

• Whatnall MC, Skinner J, Pursey K, et al. Efficacy of dietary interventions in individuals with substance use disorders: A systematic review. Journal of Human Nutrition and Dietetics. 2021.

• Champagne-Langabeer T, Cohen AS, Shrestha K, et al. Exploring boundaries with food, substances, and people in substance use recovery: A qualitative analysis. Acta Psychologica. 2025.

• Ross LJ, Wilson M, Banks M, Rezannah F, Daglish M. Prevalence of malnutrition and nutritional risk factors in patients undergoing alcohol and drug treatment. Nutrition. 2012.