Side Effects: Stomach upset and poisoning because of the oak toxicity happens and thus be vary of it.

2. Almonds:

Almonds are thought to have originated from China and Central Asia, although the original ancestory has not been traced. One of the widely attested power of almond has to do with increasing the brain power. They also aid in hair growth. Some of the compounds they contain help in regulating dopamine. Dopamine is known to uplift the mood and sharpen the memory. A 100-gram serving of almond contain approximately 570 calories, with zero cholesterol and about 50 grams of fat. It is best to have a maximum of three per day, either raw or throwing them into your daily salad.

Side Effects: Excess intake can however lead to weight gain.

3. Beechnuts:

They are of Indo-European origin. Beechnuts have spikes on their exterior and a husky texture that opens when it is ripe and contains two small nuts. They are triangular in shape and is bets to stimulate hair growth. It also maintains the health of the skin. It is known to protect the immune system and detoxify the kidneys. A serving of 100 grams contain about 570 calories and 50 grams of fat. It has good content of vitamin C and iron.

Side Effects: Abdominal pain and vomiting is one side effect you need to be careful of.

4. Brazil Nuts:

They are a native to Eastern Colombia, Eastern Per and Eastern Bolivia. They are also seen as large trees that are scattered in the large forests in the banks of Amazon River and Rio Negro. Brazil nuts have the power to maintain the selenium level in the body and thus one or two Brazil is probably all that you need to have in a day. Selenium is known to work on many different things like your mood to even swelling and inflammation. A 100-gram serving of Brazil nuts will give about 650 calories and a total of 65 grams of fat, with zero cholesterol. It contains good amount of Magnesium, calcium, iron and vitamin B-6. Snack them on at any point of the day.