You were told it was a chemical imbalance. You took the medication, and maybe it helped, yet the flat mornings and the 3 am worry kept coming back. Somewhere along the way, you started to wonder whether the problem was you. It isn't. Your symptoms are signals from your whole body, and once you see the whole picture, they start to make sense.

What actually causes anxiety and depression, if not brain chemicals?

When most people hear the words anxiety or depression, they picture “something wrong in the brain,” or a lack of willpower. In reality, these conditions rarely start in the brain alone. They reflect what's happening across your whole body: your gut, your hormones, your stress system, your sleep, your nutrition, and how you live each day.

I say this not to criticize psychiatry, but to show you a bigger map. When we think only in terms of brain chemicals, we miss the deeper causes that keep symptoms coming back, even when medication helps. Your mood is built by many systems working together:

• Your stress system (cortisol and the HPA axis)
• Your metabolism and blood sugar
• Your gut and microbiome
• Your immune and inflammatory system
• Your hormones, like the thyroid
• Your nutrient status (vitamin D, B vitamins, iron, and more)

When these systems are under strain, the brain receives distress signals. Over time, those signals can feel like anxiety, low mood, irritability, fatigue, or brain fog.

The brain is one organ inside that network, and it can't stay calm when the systems around it are struggling. Here is what we most often find underneath.

Can unstable blood sugar affect your mood?

Many patients with anxiety or low mood also live with:

• Big energy swings through the day
• Cravings for sugar or refined carbs
• Feeling shaky, irritable, or panicky when a meal runs late

That pattern often points to blood sugar and insulin that aren't steady. Insulin resistance, where your cells stop responding properly to insulin, is more common in people with depression, even before diabetes appears.1 When blood sugar keeps climbing and crashing, your body reads the swing as danger. The stress system fires more often, and the brain feels it as anxiety, poor concentration, or a dip in mood.

What you might notice:

An afternoon crash that arrives with dread, not just hunger, or a mood that rises and falls with your last meal.

Can chronic inflammation and stress cause depression?

Inflammation is the immune system's way of answering injury or infection. The trouble is the slow, low-grade kind, the sort tied to extra weight, poor sleep, gut problems, and long-term stress. Many people with depression carry higher inflammatory markers and a shifted stress-hormone system. In plain terms, the loop runs like this:

• Long-term stress pushes cortisol up.
• The body gradually stops responding to cortisol.
• Immune cells grow more inflamed.
• That inflammation interferes with mood and energy.

It's why chronic pain, autoimmune conditions, broken sleep, and weight gain so often travel together with anxiety or depression.

What you might notice:

Low mood that comes bundled with aches, heaviness, and sleep that never quite refreshes you.

Can your thyroid and nutrient levels drive anxiety and depression?

Your thyroid sets your body's metabolic pace. When it slows down (hypothyroidism), people commonly feel:

• Persistent low mood
• Fatigue and a heavy body
• Weight gain
• Constipation
• Hair changes and cold intolerance

Multiple studies link untreated or undertreated thyroid problems with a higher risk of depression.2 Low vitamin D, B vitamins, iron, and other micronutrients track with higher rates of depression and anxiety too.3 These don't explain every case, but they're easy to miss when we focus on the mind and skip the body.

What you might notice:

A flat mood that shows up alongside cold hands, thinning hair, and a gut that has slowed right down.

How does the gut-brain axis affect anxiety and depression?

Your gut and brain talk constantly. This gut-brain axis runs on nerves, hormones, immune signals, and even the chemicals your gut bacteria produce.4 People with depression often carry gut symptoms alongside it:

• IBS-like symptoms
• Bloating, constipation, or diarrhea
• Food intolerances
• A history of frequent antibiotics or ultra-processed diets

Changes in gut bacteria, a more permeable gut lining, and sluggish digestion can move mood and stress responses, and may even shape how well some antidepressants work.5 For some patients, that means tending to digestion, diet, and fibre isn't “just lifestyle advice.” It's part of caring for the mind.

What you might notice:

The days your stomach is at its worst are often the days your mood is, too.

What two myths about anxiety and depression need to go?

Myth 1: “Depression is just low serotonin.”

A large 2022 review of the serotonin theory found no convincing evidence that low serotonin levels cause depression.6 Serotonin still matters, but the story is far more complex. Mood is shaped by inflammation, hormones, metabolism, early-life experiences, stress, and relationships, not one chemical.

Myth 2: “Anxiety and depression mean you're weak.”

This is not only untrue, but it's also cruel. When your stress system, metabolism, gut, hormones, and sleep have been under strain for years, emotional symptoms are a natural consequence. Anxiety and depression are signals that something in your system needs support. They're not proof of laziness or failure.

What does Ayurvedic Science say about anxiety and depression?

Ayurvedic Science has long regarded mind and body as one unit. It describes three working principles that shape how a person thinks and feels:

• Vata: movement, the nervous system, quick thinking.
• Pitta: fire, digestion, intensity.
• Kapha: stability, structure, heaviness.

Clinical work has shown that disturbances in these doshas line up with changes in mood and anxiety. For example:

• When Vata is disturbed, it can look like anxiety, restlessness, and insomnia.
• When Pitta is disturbed, it can look like irritability, anger, and burning emotions.
• When Kapha is disturbed, it can look like heaviness, low motivation, and a stuck, slowed-down low mood.

Ayurvedic Science also assesses the state of agni (digestive fire), ama (the residue left when digestion is impaired), and the srotas (the body's channels, including manovaha srotas, the mental pathways).7 When digestion is weak, ama builds, nourishment to the brain falls short, and both body and mind feel it. For an Ayurvedic physician, asking about bowel habits, sleep, appetite, routine, and emotional load isn't optional. It's central to understanding why the mind is suffering.8

How does LYBL reach the root causes?

At LYBL, when someone comes in with anxiety or depression, we don't stop at “You have depression, here is a pill.” We ask a wider set of questions:

• How is your sleep, its onset, continuity, and timing?
• What is your digestion like, with bloating, constipation, acidity, or IBS?
• How are your energy and blood sugar, with crashes, cravings, or irritability?
• What do your labs show for thyroid, vitamin D, B12, iron, glucose, and lipids?
• What is happening with stress, whether work, family, unresolved trauma, or burnout?
• How is your movement, connection, and sense of purpose?

That's what root-cause assessment means in practice: seeing the whole person, not just brain chemistry. Depending on what we find, the approach may bring together conventional psychiatric diagnosis and medication where it's needed, an Ayurvedic assessment of dosha, agni, and the manovaha srotas, lab work, nutrition and gut-focused support, and stress-regulation practices like yoga, pranayama (breathwork), and mindfulness.

None of this is an alternative to psychiatry. It's root-cause care that works alongside it, so relief reaches deeper and lasts longer.9 You won't leave the first consultation with a label. You'll leave understanding why your body has been sounding the alarm.