Every morning you have a bad mood and do not know why? You might be surprised by the question. While a lot of things can contribute to a bad mood, you can make certain steps to eliminate the most common causes. Here are ten surprising things and situations that may give you a bad mood.

1. Food Intolerance

Food intolerance is responsible for a lot of ailments, including nausea and abdominal pain, but it can also affect mood by causing irritability, poor concentration, aggression or hyperactivity. If you experience mood changes daily, keep a log of the foods you eat and also write down any mood swings so that you can realize if there is a connection between your bad mood and the food you eat.

2. Interior decor

If you want to feel good, redecorate the house, so your mood will see an improvement. Yellow generates a feeling of happiness, blue helps relax, so try to accessorize your home with colors that will improve your mood. Scientists suggested that certain paintings have positive effects on mood and reduce stress and anxiety.

3. A promotion at work

Many people dream of being promoted, but the reality might not be as great as you think. A study conducted by the University of Warwick has found that climbing the corporate ladder does not improve your work life, instead it causes mental constraints and 10 % of people who get a promotion suffer a decline in health.

4. Habits before going to sleep

If you usually fall asleep looking at the TV, then it’s no surprise you have a bad mood the next day. Researchers determined that light during sleep suppresses melatonin production, which has a direct influence on mood. Melatonin is produced only during the night. So make sure no light comes into your bedroom so you can enjoy a restful sleep.

5. Deficiency in nutrients

While depression can be caused by a lot of factors, symptoms may be worsened or improved by diet. Deficiency of vitamin D and B (especially B6, B12 and folic acid) and omega 3 can lead to feelings of depression and anxiety. Try to include in your diet foods rich in these nutrients and see if your mood improves.

6. Friends

Maybe you feel like spending time with friends can be excellent for your mood, but that depends on their disposition. Researchers found that feelings, both positive and negative, are contagious and easily passed from one person to another, often without you realizing it. In addition, there is no need to see your friends to be influenced by their mood, as shown by a study conducted on a group of young people who socialized through a social network – one can be affected by the other’s emotions for a maximum of three days.

7. Long nights

Many people are aware that lack of sleep can contribute to a bad mood and studies have suggested that when you go to bed can be as important as how long you sleep. According to research published in Psychiatry and Clinical Neurosciences, those who do not sleep during the night have a three times greater risk of experiencing mood swings and suffer from depression compared with those who do.

 8. Birth control pills

A Monash University study has revealed that women who take the pill have a two times greater risk of suffering from depression than those who do not use such a medication. Some pills can cause frequent changes of mood, increased anger and loss of libido. So make sure you tell your doctor about any changes in your mood after taking the pill.

 9. Smoking

All people know that smoking causes cancer, heart disease and premature aging, but it is less known that it can affect mental health. According to a research conducted in New Zealand, people who smoke have bigger chances to experience depression than those who are not addicted to nicotine.

 10. Sunlight

Many people have heard of seasonal diseases caused by winter days, but few are aware that the sun can have exactly the same effect. Even if such cases are less common (1% of the population compared with 5 % for the first case) they can be a serious condition. People may experience insomnia, decreased appetite and depression.