Multiple studies have shown that zinc and a zinc-containing protein named ZAG are involved in lipid metabolism, satiety, and weight regulation, but zinc deficiencies are widespread, and having too much body fat can reduce blood levels of zinc, thereby increasing the risk of overweight and disturbances of the lipid metabolism. In a recent review article that is published in Nutrients, scientists look closer at zinc’s role in the lipid metabolism and why overweight people often lack zinc. The authors call for increased focus on zinc and end up concluding that it would be obvious to include zinc supplementation in the treatment of disrupted lipid metabolism and overweight.

The need for the trace element selenium is increased in pregnant and breastfeeding women because it supports a host of different proteins that are particularly important for tissue growth. Also, selenium supports different antioxidants that protect the unborn baby’s organs and tissues. A new review article published in Nutrients shows that lack of selenium during pregnancy may result in oxidative stress, stunted growth, and low birth weight. This may eventually have consequences for the baby’s development, cognitive skills, and health in general. The authors also mention that an expecting mother’s alcohol abuse may have a more negative health impact if she is selenium-deficient. It is a problem that selenium deficiency is such a widespread problem in Europe and other parts of the world.

- even in smokers

It has been known for long that vitamin K2 is important for circulation and bone health. According to a new study, vitamin K2 also lowers the risk of cardiovascular disease in smokers and other nicotine users. This is because vitamin K2 counteracts oxidative stress and atherosclerosis. The scientists stress how important vitamin K2 is for public health, including otherwise unhealthy groups such as smokers.

Oily fish and fish oil supplements contain EPA and DHA, two types of omega-3 fatty acids that are important for our brain, nervous system, and mental health throughout life. According to a new Irish study, young adults with higher blood levels of omega-3 are less likely to develop depression and anxiety. The researchers see a huge therapeutic potential in advising people to increase their omega-3 intake from oily fish or supplements. The problem is that modern diets contain far too little omega-3 and too much omega-6, which contributes to the increased rate of mental illness.

For decades, glucosamine has been used to prevent and treat osteoarthritis. According to a new study that is published in Nutrients, glucosamine supplements may also improve your digestion by counteracting abdominal bloating, constipation, and lumpy stools. It even looks as if glucosamine has other health benefits.

Vitamin D-deficient experimental animals are more likely to become dependent on opioids such as morphine, but their addiction decreases once their blood levels of vitamin D are restored. This was shown in an American study that is published in Science Advances. The scientists assume that low vitamin D levels also increase humans’ risk of growing dependent on opioids following medical pain treatment or other forms of exposure to addictive drugs. Both the legal and illegal opioid abuse in the United States is currently that extensive, experts refer to the problem as an epidemic. One potential way to deal with opioid dependence is to use vitamin D as a supplement, according to the researchers.

Vitamin C has a vital role in our immune defense, and having low blood levels of the nutrient can affect the severity of infections such as COVID-19 and influenza, according to a review article published in Aging and Disease. The scientists behind the study also refer to other studies that have looked at large doses of intravenous vitamin C given to patients with sepsis and life-threatening COVID-19 infections. Vitamin C deficiency is a widespread problem for various reasons and that only adds to the problem.

Vitamin D is important for a swift and effective immune response. Once COVID-19 infections become complicated and life-threatening, it is not the virus that is the threat but the fact that the immune defense reacts too slowly and then causes hyperinflammation that damages healthy tissues in the respiratory system and circulatory system.
French scientists have made a meta-analysis where they looked at the relation between vitamin D levels in the elderly and COVID-19. Their review revealed that lack of vitamin D increases the infection risk and makes it more likely that the infections become complicated and life-threatening. Vitamin D deficiency is common among older people and for that reason, the researchers recommend vitamin D supplements as an inexpensive strategy for prevention and as a supplementary source of treatment.

Selenium has an overlooked role in sperm quality and healthy pregnancies. A team of scientists from Romania has looked closer at blood levels of different selenium-containing antioxidants and found that low levels are significantly correlated with poor sperm quality. The scientists also explain that lack of selenium increases the risk of pregnancy-related complications, miscarriage, and preterm delivery. Both selenium deficiencies and infertility are common problems so selenium supplementation may be worth considering. For decades, Danish farmers have added selenium to animal fodder as a way of improving the fertility and general health of the animals.

Sun awareness campaigns have scared people away from sun exposure because of the risk of skin cancer. Still, it is essential to get enough vitamin D from the sun during the summer period, as long as we avoid getting sunburned. Vitamin D is vital for our immune defense, mood, bone health, cancer prevention, and many other things. A Swedish study has revealed that lack of sunshine is every bit as dangerous as smoking, and according to a British study, vitamin D inhibits cellular ageing. A Danish study has even shown that lack of vitamin D increases the risk of early death. The big questions are how much vitamin D do we get from sun exposure during the summer period, when do we need to take vitamin D supplements, and why should old people, dark-skinned individuals, and certain other population groups take vitamin D all year round?

Diabetes damages the circulatory system in a number of ways that are linked to impaired quality of life and early death. A meta-analysis shows that if type 2 diabetics take supplements of Q10 it lowers their risk of cardiovascular disease by reducing levels of total cholesterol and LDL cholesterol. Another positive effect of Q10 is that it serves as a unique antioxidant that counteracts oxidative stress, which is a major cause of atherosclerosis and cardiovascular damage. One of the problems of using cholesterol-lowering statins is that it inhibits the body’s endogenous Q10 synthesis, but this is something one can compensate for. According to Danish research, it is also a good idea to limit your carbohydrate intake and follow the new dietary guidelines that help stabilize blood sugar levels.