How to Improve Mental Health Naturally: Start With What You Avoid

Key Takeaways

• Supporting mental health isn’t only about what you add. Reducing or avoiding certain substances, stressors, and habits may be just as important.
• Alcohol, nicotine, caffeine, chronic stress, and excessive screen time can affect sleep, mood, stress hormones, and metabolic health.
• Mental and metabolic health are closely connected. Stress, inflammation, blood sugar regulation, and mitochondrial function can all influence how the brain functions.
• The goal isn’t to eliminate everything at once. Pay attention to how different habits affect your mood, energy, sleep, and mental clarity.
• Understanding why you rely on a habit can make changing it easier. Small, intentional reductions can be a practical place to start.

We reach for coffee to wake up, wine to unwind, and our phones to take the edge off a long day. These habits feel normal, even harmless. They’re woven into social life and daily routines. But what if some of these coping strategies are quietly working against our brains rather than supporting them?

When people search for how to improve mental health naturally, most advice focuses on what to add. Take this supplement, try this meditation app, start this new workout routine. Those tools can absolutely help, but an equally powerful and often overlooked question is this: what might need to be removed?

SMART, part of the THINK+SMART program, is designed to help you identify the everyday factors that can support or undermine your mental health. The AVOID pillar focuses on recognizing habits, substances, and stressors that may interfere with the brain’s ability to regulate mood, focus, and resilience. Sometimes supporting recovery means doing less, not more. Reducing the inputs that strain your system can create more space for the brain to stabilize and recover.

Why What You Avoid Matters As Much As What You Do

Avoidance is often misunderstood as restriction. In this framework, it means something different. It means removing the inputs that keep your nervous system and metabolism in a constant state of strain.

Many common substances and stressors repeatedly activate stress pathways in the brain. They raise cortisol, disturb sleep, alter neurotransmitters, and disrupt blood sugar regulation. Even when the effects feel mild in the moment, the cumulative impact can keep the nervous system slightly overactivated. Over time, this can intensify anxiety, worsen mood instability, and drain energy.

This is why what you avoid matters as much as what you add. Mental health and metabolic health are tightly connected. The brain depends on stable energy, balanced hormones, and well-regulated stress signals. When those systems are constantly disrupted, it becomes much harder to feel emotionally steady or mentally clear.

In the next section, we’ll look at how specific everyday habits affect both brain chemistry and metabolic health, and why reducing them can sometimes accelerate progress more than expected.

How Common Habits Harm Your Brain and Metabolism

These habits affect both your mental health and your metabolic health, and the two are more connected than most people realize. The brain is a metabolic organ. When blood sugar regulation, inflammation, and mitochondrial function are disrupted, mood and cognition can be affected[*].

Alcohol

Drinking alcohol may temporarily reduce anxiety by enhancing GABA activity in the brain, but this effect is short-lived[*]. As alcohol wears off, stress hormones rebound and neurotransmitter balance shifts in ways that can worsen anxiety, depression, and sleep quality[*]. Metabolically, alcohol impairs insulin sensitivity and interferes with mitochondrial function, placing additional strain on brain energy production[*].

Cannabis

Cannabis can feel calming in the moment for some people, yet it also alters dopamine and other neurotransmitter systems in ways that may exacerbate anxiety or low mood over time, particularly with frequent use[*]. Emerging evidence suggests cannabis may also influence mitochondrial signaling, adding another layer of metabolic stress[*].

Nicotine

Nicotine creates a powerful relief-then-withdrawal cycle. It briefly stimulates dopamine and improves focus, but as levels drop, irritability and cravings increase, reinforcing dependence[*]. At the same time, nicotine reduces insulin sensitivity and promotes inflammation and oxidative stress, which can affect both vascular and brain health[*][*].

Caffeine

Caffeine is widely accepted and often helpful in moderation, but it works by stimulating cortisol and adrenaline[*]. For some people, especially those already dealing with anxiety or sleep disruption, this can keep the nervous system in a heightened state. Caffeine can also affect insulin sensitivity and blood sugar regulation, particularly when combined with poor sleep[*].

Beyond substances, certain lifestyle patterns have similar effects.

Stressful Relationships

Toxic or chronically stressful relationships repeatedly activate the brain’s threat circuitry. When cortisol remains elevated over long periods, it can impair sleep, worsen mood regulation, and disrupt metabolic balance[*].

Excessive Screen Time

Doom scrolling and excessive screen time expose the brain to a constant stream of emotionally charged information. This reinforces feelings of hopelessness or fear and keeps the nervous system in a state of vigilance. Over time, this persistent activation can contribute to sleep disruption, stress hormone dysregulation, and emotional exhaustion[*][*].

None of this means that every person must eliminate every one of these factors immediately. The goal is awareness. When you reduce the inputs that strain both brain function and metabolism, some people notice improvements in mood, clarity, and resilience over time.

Avoidance, when practiced thoughtfully, becomes a strategic and compassionate way to support both mental and metabolic health at the same time.

The Metabolic Connection

All of these habits not only impact mood and stress levels, but they also affect the underlying biology that powers the brain.

When the nervous system is repeatedly activated by substances or environmental stressors, cortisol and other stress hormones remain elevated. Over time, this persistent stress signaling can impair mitochondrial function[*]. Mitochondria help transform chemical energy from food and oxygen into ATP, a form cells can readily use, including brain cells. When they’re strained, oxidative stress can increase, and inflammatory pathways can become more active[*].

This combination of mitochondrial dysfunction, oxidative stress, and inflammation contributes to metabolic inflexibility. The body becomes less efficient at switching between burning glucose and burning fat for fuel[*]. At the same time, overall brain energy metabolism can suffer. The brain is one of the most energy-demanding organs in the body, and if mitochondria are not functioning optimally, the brain simply does not receive the steady, efficient energy supply it needs to regulate mood, focus attention, and maintain emotional stability[*][*].

This connection becomes especially important for those using ketogenic therapy as part of a metabolic approach to mental health. Even a well-formulated ketogenic diet can be influenced by hidden stressors. Chronic stress and poor sleep may raise blood glucose for some people, which can make consistent ketosis harder to achieve[*][*]. Alcohol can also interfere with fat metabolism[*].

The key takeaway is that these harmful inputs don’t affect the mind or the body separately. They increase stress, strain mitochondria, drive inflammation, and disrupt metabolic flexibility, all of which reduce the brain’s access to reliable energy. When you reduce them, you create the biological conditions for improved metabolic function and more stable brain chemistry. That is often where meaningful healing begins.

What to Evaluate in Your Own Life

At this point, the goal is not to overhaul your entire lifestyle overnight. It’s to become aware of the inputs that may be working against your brain and metabolism. Think of this as a gentle audit rather than a rigid rulebook.

As you read through the list below, consider one simple question: Does this leave me feeling more stable and energized, or more anxious, foggy, or depleted afterward?

Substances

Alcohol, nicotine, and recreational drugs

• Do you rely on them to change your mood or manage stress?
• Do you notice rebound anxiety, low mood, poor sleep, or cravings afterward?
• Have you tried reducing them and observed changes in clarity or emotional stability?

Caffeine

• Do you feel calm and focused, or jittery and wired?
• Do you experience afternoon crashes or difficulty sleeping?
• If you struggle with anxiety, does caffeine amplify it?

For some people, moderate use may feel manageable. For others, especially those with underlying anxiety, mood instability, or sleep disruption, even small amounts can have outsized effects.

Relationships and Environment

Unsupportive relationships or social pressure

• Do certain interactions leave you feeling drained, on edge, or chronically stressed?
• Are you pressured to drink, overwork, or ignore your own needs?
• Do you feel psychologically safe in your closest relationships?

Chronic relational stress keeps cortisol elevated and can quietly undermine both mood and metabolic health.

Excessive screen time or doom scrolling

• Do you end your day feeling informed and grounded, or overwhelmed and discouraged?
• Does screen use interfere with sleep or face-to-face connection?
• Do you notice increased anxiety after consuming news or social media?

Constant exposure to emotionally charged content can keep the nervous system in a state of vigilance without you fully realizing it.

Food and Mood

Certain foods that trigger mood shifts or cravings

• Do you notice energy crashes after high-sugar or highly processed meals?
• Do certain foods increase cravings, irritability, or brain fog?
• Are there patterns between what you eat and how steady you feel emotionally?

For some individuals, rapid blood sugar swings, ultra-processed foods, or specific dietary triggers can contribute to mood instability and metabolic stress.

How To Approach Change Without Judgement

Once you begin identifying habits that may be working against you, the next step is to get curious. Before trying to eliminate anything, ask yourself: What is this habit doing for me?

Most coping behaviors exist for a reason. Coffee may be helping you push through low energy or brain fog. Wine might soften anxiety at the end of a long day. Scrolling late at night could be a way to soothe loneliness or distract from stress. These habits are all attempts to regulate mood, energy, or connection. When you understand the function of a habit, it can be easier to decide what to change, and when.

This is also where metabolic health becomes highly relevant. Many of the urges that drive self-medicating behaviors are amplified by unstable blood sugar, poor sleep, inflammation, and inconsistent brain energy. When mood and energy swing dramatically, it makes sense that we reach for something that promises fast relief.

A well-formulated ketogenic diet may help stabilize some of those underlying drivers for some individuals. By improving insulin sensitivity and supporting mitochondrial function, ketogenic therapy may provide the brain with a steadier fuel source. More stable blood sugar and more consistent ketone availability may reduce energy crashes, irritability, and cravings that can push some people toward caffeine, alcohol, or processed foods[*][*].

Many individuals report that as their mood becomes more stable and their energy more consistent, their reliance on substances naturally begins to fade. It doesn’t always require force. When the brain feels better fueled and less inflamed, the urgency to self-soothe can decrease.

The goal isn’t perfection. It’s progress. Starting small, and reducing rather than eliminating, can feel more sustainable. Experimenting with one change at a time can also help.

Healing is rarely a straight line. But every small reduction in stress, inflammation, or metabolic strain creates more room for your brain to function the way it was designed to.

Takeaway

Avoidance is often framed as deprivation, but in reality, it can be one of the most empowering decisions you make for your mental and metabolic health. When you reduce the inputs that strain your nervous system, fragment your sleep, destabilize blood sugar, or fuel inflammation, you create the conditions for greater clarity, steadiness, and resilience.

Setting boundaries around alcohol, screen time, caffeine, or relationships is not about restriction for its own sake. It’s about protecting the biological systems that support your brain’s function.

Each boundary sends a powerful message to your body that stability matters more than short-term relief. Over time, those choices compound.

As stress load decreases, mitochondrial function may improve, and brain energy may become more consistent. Some people notice that mood feels steadier and mental fog begins to lift.

When avoidance is practiced with intention and self-compassion, it becomes an act of self-respect rather than self-denial, and every step in that direction moves you closer to lasting balance and recovery.

Related resources:

• Q&A’s: Are Sweeteners Helpful or Harmful? Dairy? Ketone Levels, Longevity, and More
• How to Bounce Back from Challenges and Setbacks
• 6 Clear Signs You Might Have Food Addiction & What You Can Do

FAQs

Q: Does alcohol really make anxiety and depression worse?

A: Alcohol can feel calming at first for some people, but it can also disrupt sleep and stress physiology, and some people notice rebound anxiety or low mood as it wears off.

Q: Is caffeine bad for mental health?

A: It depends on the person. Caffeine can stimulate stress hormones and may worsen anxiety or disrupt sleep, especially in higher doses or for those who are more sensitive.

Q: What is metabolic mental health?

A: Metabolic mental health is an emerging field that explores how brain energy and metabolism may relate to psychiatric conditions, and how dietary and lifestyle changes may support recovery for some people.

Q: How does doom scrolling affect the brain?

A: Excessive exposure to negative content may increase stress and can reinforce feelings of hopelessness for some people, which may keep the nervous system in a heightened state.

Q: Can a ketogenic diet help reduce cravings for alcohol or caffeine?

A: Some people report that a well-formulated ketogenic diet helps stabilize mood and energy, which may reduce the urge to self-medicate with substances like alcohol or caffeine. Responses vary.

Q: How do toxic relationships affect mental health?

A: Unsupportive or toxic relationships can be a source of chronic stress, and some people find they contribute to anxiety or mood instability over time.

Q: Where do I start if I want to remove harmful habits?

A: A helpful starting point can be understanding what each habit is doing for you, then gently exploring alternatives rather than trying to change everything at once.