Scientists have discussed for quite some time to what extent vitamin D or omega-3 fatty acids from fish oil are able to lower the risk of a heart attack, stroke, and cancer. Although quite a lot of studies have been conducted in this area, there still is no large-scale clinical population study that includes different races. However, an American study has shown that fish oil supplements lower your risk of a heart attack, and large quantities of vitamin D have a long-term preventative effect on different cancer forms. The effect of these two different supplements is also affected by a person’s race.

It is commonly known that vitamin D plays a vital role for our bones and immune system, and there is even evidence that vitamin D also plays a role in the functioning of our lungs, heart, and muscles. According to a new study, blood levels of vitamin D are determining for how well we utilize our oxygen, and that affects our training capacity and lifespan. The study is published in European Journal of Preventive Cardiology.

– but focus on sodium if you have high blood pressure

Salt is a flavor enhancer, and the good news is that salt is not as harmful as previously thought. In fact, salt is essential when consumed in the right quantities, and for most people, it poses no health risk to consume up to five grams – or two and half teaspoons – of salt daily, according to a study that is published in the Lancet. Many people on anti-hypertensive drugs are advised to cut back on their salt intake, but it takes more than that. In fact, it is potassium that controls how much salt the kidneys excrete.

During the winter period, many people catch a cold or are bed-ridden with a bout of the flu. They may consider this to be perfectly natural, but it is actually a sign of a weakened immune defense, and that makes them susceptible to contamination. What matters is to make sure to get plenty of vitamin D, vitamin C, selenium, and zinc, all of which are nutrients that have different functions in the immune system. Some nutrients are also needed in larger quantities to tackle a beginning infection, and it is important to act quickly in order to nip the infection in the bud.
In fact, it is vital for us to be nutritionally bolstered during the winter period, where otherwise harmless virus infections can lead to complications such as herpes, bronchitis, and pneumonia, if the immune system is unable to work full throttle.

Vitamin E is said to be a powerful antioxidant that counteracts wrinkles, reduces the degeneration of joints in rheumatoid arthritis, and even protects against atherosclerosis and cancer. However, studies have shown contradictory results, and the positive effects are most probably a result of luck. Now, a team of international scientists has demonstrated that the effect of vitamin E is not related to the vitamin itself but rather to the effect of a vitamin E-dependent metabolite that is produced in the liver. The researchers see a huge potential in vitamin E therapy that is tailored to fit each person’s individual utilization and metabolism of the nutrient. Vitamin E supplements should contain natural forms of the vitamin to provide the best effect.

Type 2 diabetes is spreading like a bushfire, and most people will be affected by periodontal disease at some point in their life. Now, science has discovered that lack of vitamin D, which is also increasingly common, enhances the risk of both diseases. Their observation is based on new study that sheds light, for the very first time, on vitamin D and its role in preventing and treating the two conditions.

- but specific nutrients protect you

People, who eat nutrient-depleted diets, have an increased risk of contracting cancer, according to a French study that is published in PLoS Medicine. The scientists therefore recommend labeling food to help consumers make healthier choices. In the Nordic countries, we already have the “Keyhole label” on certain healthy food items, but even if you follow the official dietary guidelines, it may be difficult to get enough vitamin D and selenium, both of which are nutrients with several anti-cancer mechanisms.

A pregnant woman can support the development of her baby’s brain and vision by consuming oily fish regularly, according to a new Finnish study. Meanwhile, a new Danish study shows that fish oil supplements given to pregnant women give their offspring a better start at life because of their content of omega-3 fatty acids. Unfortunately, the consumption of omega-3 has gone down, and pregnant women are discouraged from eating tuna and other good sources of omega-3, as these fish contain mercury. Health authorities should take this dilemma into account and possibly recommend high-quality supplements of purified fish oil to pregnant women and small children – just like they recommend extra folic acid, iron, and vitamin D. Pregnant vegetarians and vegans should pay careful attention and make sure that their child gets enough omega-3.