A selenium deficiency may increase the risk of gluten intolerance/celiac disease, which can lead to metabolic disorders and vice versa. Because selenium deficiencies may be a result of eating a poor diet and suffering from malabsorption, this may easily turn into a vicious cycle.

PMS (Premenstrual Syndrome) entails a long list of symptoms such as headaches, mood swings, fatigue, irritability, fluid retention, and a strong craving for sweets and stimulants - and even a desire for divorce.

Overweight or obesity during pregnancy is linked to low vitamin D levels. This negatively affects the health of the expecting mother, and in the long run it increases the child's risk of weak bones, overweight, type-2 diabetes, and allergies.

According to a study that was presented to a group of endocrinologists at an Edinburgh conference, supplements of vitamin D may improve sports performance and reduce the risk of cardiovascular disease. One of the things vitamin D does is to block the stress hormone cortisol that makes your blood pressure go up. The problem is that many people lack vitamin D, not only in the winter time but even during the summer period.

Once the sperm cell has penetrated the egg cell, sparks fly from zinc atoms in a fascinating fireworks display. This new discovery may help fertility doctors select the most best eggs for in-vitro fertilization (IVF). The discovery also has relevance for all others who wish a successful pregnancy. It all boils down to having adequate zinc stores in the body.

A British study has shown that elevated blood sugar levels cause blood vessels to constrict. This strains the heart, raises blood pressure, and reduces the blood supply to other organs. It is therefore sugar and not saturated fat that is the cause of cardiovascular disease. We should be far more focused on how to control our blood sugar levels. Proper diet means a lot, and so does adequate intake of a particular essential trace element that appears to have a special role.

Surprisingly many people suffer from hypertension without knowing it. That is a concealed threat, as elevated blood pressure is a common cause of stroke and premature death. However, people with hypertension who take folic acid along with their blood pressure-lowering medicine have a substantially lower risk of stroke.

Even though sun lovers have an increased risk of developing skin cancer, a recent Swedish study shows that those who sunbathe the most have a lower risk of dying of heart disease and other ailments. Therefore, be sure to get plenty of sun while you can so your body can produce generous amounts of vitamin D - but don't overdo it. Also, you may want to consider taking a vitamin D supplement during the winter period when your body's levels of the nutrient have been depleted, as this may help you live longer.

Hormonal imbalances have broad implications and increase the risk of chronic fatigue, overweight, impaired fertility, dry mucosa, hot flushes, slow metabolism, breast cancer, and many other problems. Lack of essential nutrients contributes to such disruptions of the sensitive hormone system. This is also the case with hormone-disrupting compounds.

A study has shown that many children and young people suffering from migraines lack coenzyme Q10 and several vitamins. While more research is needed before conclusions can be made, earlier studies have actually shown that Q10 supplementation may have a positive effect on migraine. Because migraine is common among children and adults it is obvious to take a closer look at the underlying cause and compensate for any deficiencies.

Melatonin is primarily known for its role as a sleep hormone. Nonetheless, studies reveal that melatonin has a variety of anti-cancer properties, and supplementing with the substance may increase the effect of chemotherapy while counteracting its side effects.