Impaired fertility and involuntary childlessness are common in the Nordic countries and there can be a number of reasons for these serious problems. However, according to a large Finnish study that is published in Nutrients, 
CLA
CLA (conjugated linoleic acid) is a group of omega-6 fatty acids, of which there are 28 different varieties. A few of them are associated with health benefits. This is the case with the following two types, Trans-10,Cis-12 and Cis-9,Trans-11
Copper is a key ingredient in fat metabolism
For the first time ever scientists from California have discovered copper's role in the burning of fat. This improves the nutrient's reputation as an essential nutrient.
Lack of sunlight may increase your weight during the winter period for different reasons
Scientists from Alberta University in Canada have observed that lack of sunlight may contribute to the weight increase that many people experience during the winter period. This is because our fat cells are sensitive to sunlight. Lack of sunlight may also result in poor sleep and low levels of vitamin D, a nutrient that has other metabolic functions.
“Taking capsules with co-enzyme Q10 has freed me of the severe side effects of my cholesterol lowering medicine,” Mrs Franken explains.