Supporting girls (and boys) through the chaos of teenagedom with food

Teenagers can drive us up the wall. They argue, resist, roll their eyes and push every boundary they can find. But before we chalk it up to attitude, it helps to remember there is always more going on underneath. Their brains are rewiring at incredible speed, and their hormones are surging in ways that pull their emotions in every direction. Even when they seem stubborn or distant, they are navigating huge internal shifts that they do not yet have the tools to understand.

Now, I do not have a teenager yet. I will be honest, I am slightly dreading it. But I also know that with the right food and the proper support, I can go some way towards helping my daughter through it. I am endlessly curious about hormones at every age, and the more I learn, the more I see how food can offer something steady amid so much change.

Although this post focuses on girls, teenage boys ride their own hormonal tide too. Testosterone surges, rapid growth and huge jumps in appetite place big demands on their bodies. Their needs look different, but the principle is the same. Stable blood sugar, good protein intake, and nutrients like zinc, magnesium, and omega-3s help all teenagers feel more grounded.

What happens to girls’ hormones during puberty

Puberty is not a smooth rise in hormones. It is a series of unpredictable surges.

Estrogen climbs and dips in dramatic waves and affects the parts of the brain that regulate emotion and stress. Early research suggests rising estrogen can intensify sensitivity to stress, joy, anxiety and irritation.

Progesterone takes longer to settle. In the first years after periods begin, many cycles do not include ovulation, which means progesterone may be low. Lower progesterone has been linked with mood swings, disrupted sleep and restlessness.

All of this is happening while the brain regions responsible for emotional regulation are still developing. This is biology, not misbehaviour, and it can feel overwhelming for her.

What this feels like for them, and for us

For her, puberty might feel like:

• Sudden tears or irritation

• Exhaustion that arrives without warning

• Cravings or no appetite at all

• Bloating, cramps or headaches

• Difficulty focusing

• Feeling too much or nothing at all

• Skin changes and self-consciousness

For us, it can feel like:

• Navigating emotional landmines

• Watching a confident girl feel unsure

• Not knowing what she needs from moment to moment

• Wanting to help without overwhelming her

Food cannot stop the storm, but it can soften the edges.

How can food help?

Food works quietly in the background to support mood, energy and hormone balance. Most of these tips help boys, too.

Steady blood sugar supports steadier moods

Blood sugar spikes and crashes are linked to irritability and emotional swings.

Aim for meals and snacks that combine:

• Protein (eggs, yoghurt, chicken, beans, tofu, hummus)

• Complex carbohydrates (oats, wholegrain bread, brown rice, quinoa, wholegrain pasta)

• Healthy fats (avocado, nuts, seeds, olive oil, nut butter)

Examples include yoghurt with berries, eggs on wholegrain toast, hummus with oatcakes or a smoothie with nut butter.

Iron for periods, energy and focus

Iron needs rise once menstruation begins. Low iron can cause tiredness, anxiety and poor concentration.

Include:

• Meat or chicken

• Beans and lentils

• Spinach

• Tofu

• Pumpkin seeds

Pair with vitamin C foods like berries or citrus to improve absorption.

Magnesium for calm and sleep

Magnesium supports the nervous system and helps with PMS symptoms.

Sources include:

• Dark chocolate

• Leafy greens

• Nuts and seeds

• Oats

• Beans

Omega-3 fats for mood and brain function

Omega-3s support the brain and reduce inflammation.

Include:

• Salmon or sardines

• Walnuts

• Chia or flaxseed

• Omega-3 fortified foods

Calcium and vitamin D for bone strength and mood

These nutrients support bone development, mood and hormonal balance.

Include:

• Dairy or fortified plant milks

• Leafy greens

• Eggs

• Oily fish

• Safe sunlight exposure

What to gently encourage them to avoid

Girls tend to feel the effects more strongly, but these points help boys, too.

High sugar foods

Cause fast spikes and crashes that worsen irritability and fatigue.

Ultra-processed foods

Increase inflammation and do little to fuel the brain or body.

Too much caffeine

Energy drinks and iced coffees disrupt sleep and heighten anxiety.

Skipping meals

Especially breakfast, which is crucial for blood sugar stability.

Why this matters

Good nutrition helps teenage girls with:

• Concentration and learning

• Emotional steadiness

• Healthier skin

• Better sleep

• Fewer disruptive periods

• More stable energy

• Stronger bones

• A positive relationship with food

Good nutrition also helps teenagers build a positive, long-lasting relationship with food and their changing bodies, something that can support them far beyond these years.

Most of these benefits support boys as well.

What is realistic

Realistic support looks like:

• Easy, visible, healthy snacks

• Quick breakfasts

• Water bottles always filled

• Family meals when possible

• Avoiding arguments over food

• Talking about how food makes them feel, not how it makes them look

• Involving them in cooking or shopping

• Changing one habit at a time

And honestly, none of this has to be perfect. I do not have a teenager yet, but the more I learn, the more I realise that small, steady habits are what make the difference. Some days will be smooth, others will be messy, and that is completely normal. What matters is the overall rhythm, not each meal.

Food is simply one way we can support teenagers through a stage that is loud, emotional and full of change. It will not solve everything, but it can make their days a little steadier and their bodies a little more supported. And that is more than enough.