1st – Buying too much groceries at a time
This is one of the most common mistakes. Whether one is on a ketogenic diet or not. Of course, one larger purchase during the week usually seems like a good way to ensure you have all the ingredients that are needed and will be enough for all 7 days. However, vitamins and minerals from fruits and vegetables begin to fade as soon as they are picked, which means that the food stored for longer periods of time, has less nutrients. After a week, refrigerated spinach contains only half the vitamins it usually contains. Another example – Broccoli, within 10 days loses about 62% of flavonoids that it contains normally.
2nd – The groceries are held in transparent containers
Milk is rich in vitamin B, or riboflavin, but according to research from Ghent University in Belgium, exposure to light causes a chemical reaction that reduces the effect of vitamins. Other nutrients such as amino acids (inevitable in the construction of proteins) and vitamins A, C, D and E are also affected by this reaction. And, because the varieties of milk that have only little or no fat at all are less dense than ordinary milk, the light can penetrate through them more easily. This process, known as photo-oxidation can change the taste of milk and create free radicals that can cause various diseases. Grain based products (particularly the ones with whole grains) have a high concentration of riboflavin, and because of that, they are also exposed to this process.
3rd – Intake of too much sugar
This scenario is probably known to almost everyone who ever tried to lose weight: on a ketogenic type of diet or any other kind of diet, the intake of unnecessary amounts of sugar should always be kept to a minimum. It can be found in almost every industrially made food. Sugar is often related to various conditions like fatigue, insomnia, anxiety, depression, premature aging and similar. Fruits and drinks with high sugar content should also be avoided. In any case, as a rule, it is always better to eat raw, whole fruit and vegetables, because that way one also gets relatively high amounts of valuable fibers.