# Tween Girl Nutrition: Supporting Her Through Growing, Changing Bodies **Published:** 2026-09-16 > Growing girls have changing nutritional needs. Learn how protein, healthy fats, iron, magnesium, vitamin D, and whole foods can support tween girls through puberty, growth spurts, and the start of menstruation. Learn what tween girls need during puberty, from protein and healthy fats to iron, magnesium, and vitamin D, plus simple ways to support growing bodies. One day she's a little girl, and seemingly overnight, everything starts changing. Tween girls are growing quickly, hormones are beginning to shift, periods may be starting, and suddenly the kid who used to pick at her dinner is standing in the kitchen looking for another snack. This season can feel a little awkward for everyone, but nutrition doesn't have to be complicated. In fact, one of the best things we can do for our daughters during these years is help them learn to nourish their changing bodies instead of becoming afraid of them. Let's talk about what tween girls actually need… and a few simple ways we can support them. ## Growing Girls Need to Eat! Let's start here because it's important:** puberty is not a time to teach girls to eat less. ** Their bodies are doing a tremendous amount of work. They're growing bones, building muscle, developing their brains, and moving through major hormonal changes. That requires energy and nutrients. Instead of focusing on calories or restricting foods, help your tween build meals and snacks around nourishing basics: - Quality protein like eggs, beef, chicken, fish, beans, or yogurt - Healthy fats like avocado, butter, olive oil, nuts, seeds, and eggs - Fruits and vegetables - Nutrient-rich carbohydrates like potatoes, oats, sourdough, rice, and fruit - Plenty of water and minerals And don't be surprised if she's genuinely hungry again two hours after eating. Growth spurts are no joke! ### Periods Bring New Nutritional Needs Once menstruation begins, nutrition deserves a little extra attention. **Iron **is an especially important nutrient for menstruating girls because iron is lost through blood. Iron-rich foods like red meat, eggs, beans, lentils, leafy greens, and pumpkin seeds can be incorporated regularly. Pairing plant sources of iron with **vitamin C-rich foods** can also help the body absorb iron more effectively. For girls who need some additional nutritional support, [**Earthley's Energy Plus**](/products/energy-plus-herbal-iron) is an herbal source of iron designed to gently support healthy iron levels and energy. Heavy periods, ongoing exhaustion, unusual weakness, dizziness, or other symptoms shouldn't simply be written off as "being a teenager," though. Those are good reasons to check in with a healthcare professional and determine whether iron or something else needs attention. ### And Yes... Chocolate Can Have a Place Here! If your tween suddenly seems very interested in chocolate around her period, you don't necessarily need to fight that craving. Chocolate can actually bring some nutrition to the table… **when we're talking about quality cocoa or cacao, **rather than candy that's mostly sugar. Cocoa naturally provides minerals, including **magnesium and iron**, along with antioxidant plant compounds. Magnesium is especially important for normal muscle and nervous system function, while iron becomes increasingly important once menstruation begins. So maybe chocolate doesn't need to be the enemy! [**Earthley's Cocoa Calm**](/products/cocoa-calm) is a fun option for tween girls because it combines cocoa with herbs traditionally used to support a calm, balanced mood. And it doesn't have to be limited to a mug of hot cocoa. While that's certainly delicious (especially before bed!), Cocoa Calm can also be mixed into recipes. Try adding it to oatmeal, smoothies, yogurt, energy bites, baked goods, or other homemade treats. It's an easy way to make something she already enjoys feel a little more nourishing, without making healthy eating feel like a chore. ### Don't Forget About Bones The tween and teen years are incredibly important for building the bones she'll carry into adulthood. **Calcium **gets a lot of attention here, but it isn't working alone. **Vitamin D and magnesium** matter, too. Encourage calcium-rich whole foods, plenty of outdoor time, and regular movement. Running, jumping, hiking, dancing, and other weight-bearing activities aren't just fun — they're good for growing bones. [**Earthley's Vitamin D Cream**](/products/vitamin-d-cream) can provide additional vitamin D support, particularly during seasons when sunshine is limited. And [**Earthley's Magnesium Lotion**](/products/magnesium-lotion) provides topical magnesium and can be an easy addition to a nighttime routine - especially after a long, active day. ### Feed Her Brain, Too There's a lot happening upstairs during these years! Tween brains are still developing while they're also navigating schoolwork, friendships, changing emotions, new responsibilities, and hormonal shifts. Healthy fats are especially important during this season. Fatty fish, eggs, nuts, seeds, avocado, and other quality fats are great additions to meals. [**Earthley's Cod Liver Oil **](/products/cod-liver-oil)provides the omega-3 fatty acids EPA and DHA along with naturally occurring vitamins A and D, making it another simple option for supporting a growing brain and body. If focus and occasional overwhelm are becoming bigger concerns, Calm & Clarity can also be incorporated as gentle herbal support for focus and a balanced mood. ## What About a Multivitamin? Food should still do most of the heavy lifting. But let's be realistic: tweens aren't known for eating perfectly balanced meals every single day. Some days she eats everything you serve. Other days she's suddenly decided she hates the food she's eaten happily for the last five years. That's okay. Supplements can help fill gaps rather than replace food. [**Earthley's Nourish Her Naturally**](/products/nourish-her-naturally) is a whole-herb multivitamin option that can provide some additional nutritional support alongside a varied, nutrient-rich diet. You don't need to give your tween every supplement in the cabinet, either. Look at her. What is she eating? Has she started menstruating? Is she sleeping well? Is she outside regularly? Is she unusually tired? Support the needs that are actually there. ## Help Her Learn to Listen to Her Body Maybe one of the most valuable things we can teach a tween girl isn't what to eat at all. **It's how to notice what her body is telling her. ** *Is she hungry?* Eat. *Thirsty?* Drink. *Exhausted?* Rest. *Has her appetite suddenly increased?* Maybe she's growing. *Does she feel noticeably better when breakfast includes protein instead of just something sweet? *That's worth noticing, too. These years are when many girls begin receiving messages about dieting, weight, body shape, and what they supposedly should look like. Home can be the place where the message is different. Food gives us energy. Protein helps us grow. Fat isn't something to fear. Bodies change during puberty because they're supposed to. And yes, sometimes chocolate can fit into a nourishing diet, too. ## Final Thoughts Tween girls don't need perfect diets, and parents don't need to turn every meal into a nutrition lesson. Keep good food available. Let her appetite grow when her body needs more. Pay a little extra attention to nutrients like iron, vitamin D, magnesium, healthy fats, and protein, especially as puberty and menstruation begin. When there's a genuine gap, targeted options like **Energy Plus, Vitamin D Cream, Magnesium Lotion, Cod Liver Oil, Cocoa Calm, or Nourish Me Naturally** can provide some extra support. But the bigger goal is helping her enter young womanhood understanding something she'll hopefully carry with her for life: Her body is growing and changing in incredible ways. Helping her learn to nourish it now can build habits of care that last well beyond the tween years.