Recent studies indicate that taking high doses of vitamins is not only unnecessary but could also pose serious health risks. Experts now advocate for targeted supplementation, emphasizing that it should only occur after a thorough assessment of individual nutrient needs.
Supplements Only for Documented Deficiencies
The effectiveness of vitamins largely depends on one’s nutrient status. Without a deficiency, these supplements often provide little to no benefit. Modern diagnostic methods, such as gut microbiome tests, can help determine a person’s specific nutrient requirements.
This need for personalized assessment is particularly relevant for fatigue. Approximately 30% of Germans report feeling tired two to three times a week, and 18% feel this way daily. The European Food Safety Authority (EFSA) allows health claims for vitamins that combat fatigue only when their efficacy is scientifically validated.
High Doses May Increase Cancer Risk
Recent research has raised concerns regarding high-dose vitamin supplementation. A study from 2019 suggested that extremely high doses of Vitamin B12 might enhance the growth of existing cancer cells. Furthermore, a 2023 study published in the Journal of Clinical Investigation demonstrated that antioxidants like Vitamins A, C, and E could promote blood vessel formation within tumors when consumed in excessive amounts.
The German Cancer Society strongly advises against taking supplements without a medically established deficiency.
Before resorting to random supplements, it is crucial to understand what your blood values—such as cholesterol or vitamin levels—truly indicate about your health. A free 25-page report can assist you in interpreting lab results and identifying deficiencies effectively. Download your free lab self-check now
Special Attention for Older Adults
As individuals reach around 60 years of age, their nutrient requirements shift. Physiological changes and medications like acid blockers or Metformin can hinder the absorption of essential nutrients. In practice, doctors often recommend targeted supplements of Vitamin D, magnesium, and Vitamin B12 to prevent bone or muscle loss.
Additionally, the synergy between nutrients plays an important role. Simultaneous intake of protein and Vitamin C enhances collagen formation. Since the body’s ability to produce collagen declines yearly (by about 1% to 1.5%) after the age of 25, experts suggest a daily intake of one gram of protein per kilogram of body weight. A 2021 study also confirmed the safety of daily collagen supplementation ranging from 2.5 to 10 grams over 90 days.
New Insights from Immunology Research
Groundbreaking research is providing exciting insights. On June 18, 2026, researchers from the Universities of Münster and Bochum published a study in Advanced Science, revealing that immune cells communicate directly with the nervous system. Neutrophil granulocytes store catecholamines like dopamine and adrenaline, releasing these during inflammatory processes.
Concurrent with this, new therapeutic agents are coming to the forefront:
- Thymosin Alpha 1 (T?1): This regulates immune response and combats lymphopenia, receiving mentions in recommendations from the Chinese National Committee for respiratory infections.
- Vitamin U (S-Methylmethionine): Research suggests its potential in protecting the gastrointestinal mucosa and aiding wound healing.
- Sialic acids: A 2026 study in Nature Communications elucidated transport pathways for the O-acetylation of sialic acids, crucial for understanding how coronaviruses and Influenza C viruses enter cells.
Often, chronic fatigue or joint pain can stem from silent inflammation, which can be alleviated through proper nutrient intake. Discover in this free guide which 12 natural foods can act as pain relievers and how to regain your vitality. Get your free guide to anti-inflammatory nutrition
mRNA Vaccines: High Efficacy but Waning Protection
Vaccination research also yields precise data. A systematic review published in the Lancet, which analyzed 68 studies, found that the efficacy of mRNA vaccines two to six weeks post-vaccination is approximately 87% against infections and up to 94% against mortality. However, after seven to eight months, protection against infections drops to around 50%, while the protection against severe cases remains relatively stable at 80%.
