Diet, smoking, and aging processes increase the risk of developing chronic obstructive pulmonary disease (COPD), a condition that causes millions of deaths worldwide. According to a meta-analysis published in Nutrients, vitamin D supplementation seems to improve lung function.

- from the first trimester

A pregnant woman's vitamin D level in the first trimester is relevant for the development and growth of the fetus. According to a study published in The American Journal of Clinical Nutrition, being vitamin D-deficient during the first trimester can increase the risk of preterm birth and decreased birth length.

An increasing number of people are being diagnosed with ADHD, which affects neurological development, learning, and social interactions. There is growing evidence that the brain and nervous system often lack nutrients that are necessary for several vital functions, or that they are exposed to harmful substances. A review article published in Cureus shows that supplements of vitamin D, magnesium, and fish oil can improve symptoms.

Rheumatoid arthritis is characterized by chronic inflammation that attacks and destroys the joints. It also increases the risk of cardiovascular diseases, respiratory diseases, and premature death. However, according to a review article published in Clinical Rheumatology, supplements of vitamins D, B12, C, and K2 may play a crucial role in regulating inflammation, supporting bone health, improving circulation, and enhancing overall patient health.

The B vitamin biotin reduces neurological brain damage that is caused by manganese and resembles Parkinson’s disease. Although manganese is an essential mineral, excessive intake can act as a neurotoxin. However, according to a study published in Science Signaling, biotin appears to have a therapeutic effect on Parkinson-like symptoms by promoting the production of the neurotransmitter dopamine, which is important for the nervous system and mood.

Selenium is involved in enzymes that activate thyroid hormones. It is also part of several antioxidants that protect cells and the circulatory system from damage caused by free radicals. Additionally, selenium is crucial for the optimal utilization of Q10, which plays a role in cellular energy metabolism. However, selenium intake in many European countries is too low, mainly due to depleted soil. At the same time, the body’s endogenous production of Q10 declines significantly with age. This can lead to metabolic disorders, atherosclerosis, fatigue, and other deficiency-related conditions. According to a follow-up study published in BMC Medicine, supplementation with selenium and Q10 has a positive effect on thyroid hormones, circulation, quality of life, and lifespan.

- and much more

Deficiencies of vitamin B12 are widespread due to plant-based diets, aging processes, poor absorption, and certain types of medication. A B12 deficiency can cause anemia, fatigue, poor memory, infections, reduced fertility, impotence, and neurological diseases such as neuropathy, according to an article published in Cureus.