5 groundbreaking studies on supplements and health in 2025
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Want to stay up-to-date on what the research says about supplements? We've compiled five of the most exciting scientific studies from 2025 – and explain how they can affect your health.
1. Magnesium reduces PMS symptoms – new documentation in 2025
A new randomized trial published in the Journal of Women's Health (2025) shows that magnesium supplementation (250 mg daily for 8 weeks) reduced PMS symptoms by over 40% compared to placebo. Participants experienced less sleep problems, mood swings, and muscle pain.
What does that mean to you?
Magnesium strengthens the nervous system and reduces stress – and is now also proving to be an effective, natural aid against PMS.
Try this from Aarja:
ZMA – Magnesium Glycinate – a combination of magnesium bisglycinate, B6, zinc and hemp seeds for optimal effect.
💡 Dosage: 1–4 capsules daily, preferably in the evening for calm and relaxation.
2. Probiotics Improve Mood and Reduce Stress in Young Adults
In a study from the University of Helsinki ( Nutritional Psychiatry , 2025), young adults with stress-related disorders were given probiotic supplements with Lactobacillus rhamnosus GG for six weeks. The result? Significantly lower levels of anxiety and depressive symptoms.
Why is this important?
The study supports the connection between gut health and mental well-being – and gives probiotics a new and important role in stress management.
Try this from Aarja:
Biotic Boost – an upcoming probiotic supplement from Aarja Health, designed to support gut health and mental well-being.
💡 Dosage: Information will be available at launch.
3. Omega-3 protects against cognitive decline in the elderly
A European study published in The Lancet Healthy Longevity (2025) showed that daily supplementation of 1.2 g of DHA-rich omega-3 improved memory and mental function in older adults with early cognitive decline.
An important point:
DHA is the omega-3 fatty acid that appears to have the greatest effect on the brain – making supplements high in DHA a smart choice for aging brains.
Try this from Aarja:
Omega-3 Krill, Choline & Astaxanthin – a powerful combination of omega-3 fatty acids and antioxidants for brain health.
💡 Dosage: 2 capsules daily with meals for optimal absorption.
4. Vitamin D3 and K2: Strong combo for bone health and immune system
A study published in Nutrients (2025) examined the effects of a combination of D3 and K2 (MK-7) in people with symptoms of long COVID. The results showed improved energy, reduced inflammation, and support for the bone and vascular system.
What does that mean to you?
D3 helps absorb calcium, while K2 directs it to the skeleton – and keeps blood vessels clear. An ideal combination for those who want to support the immune system and avoid calcium deposits.
Try this from Aarja:
Calcium + D3 + K2 (Vegan) – a vegan supplement that supports bone structure, teeth, blood and immune system.
💡 Dosage: 1–2 tablets daily, preferably with food.
5. Multivitamins can help with brain fog and low energy after illness
Frontiers in Nutrition (2025) published a study of 500 people with long-term fatigue and “brain fog” after respiratory infections. Those who took a broad spectrum of vitamins and minerals for 60 days reported significantly improved cognitive function and energy.
What the researchers think:
Supplements provide the greatest benefit when the body is out of balance – for example, after illness, stress or a poor diet. A quality supplement can support recovery.
Try this from Aarja:
Mind & Body Boost – a multivitamin and mineral supplement that supports energy and mental clarity.
💡 Dosage: 1 sachet dissolved in water daily - provides a fresh start to the day.