Getting the proper amount of B vitamins is an essential part of your overall health and a great blessing. Vitamin B1, B6 and B12 have particular benefits to multiple systems in your body.
It doesn’t take much to make sure you have enough, and most people find that they’re doing just fine in this department, but it doesn’t hurt to make sure.
Vitamin B1:
Also called thiamine, is a coenzyme used by the body to metabolize food for energy and to maintain proper heart and nerve function.
Deficiency:
Thiamine deficiency can cause weakness, chronic fatigue, heart complications, psychosis, and nerve damage. Decrease in short term memory, Confusion, Irritability, Muscle weakness, mental changes such as apathy or depression, Cardiovascular, effects such as an enlarged heart, Anorexia or rapid weight loss, Poor appetite
Sources:vitamin-B6Thiamine can be found in many commonly eaten foods including yeasts, certain whole grains, beans, nuts, and meat. Additionally it is included in many vitamin B complex supplement products.

Vitamin B6:

Deficiency B6
Sore tongue
Impaired nerves
Irritability
Convulsion
Morning sickness (more pronounced in pregnant women)
Confusion
Depression
Arthritis
Incidents of still born babies (in cases of women with severe deficiency)
Anemia
Carpel tunnel syndrome
Sources B6:vitamin-B6Excellent sources of vitamin B6 include beef, poultry, fish, and eggs. Other foods that are high in B6 vitamin are whole grains, fortified cereals, nuts, beans, bananas, and potatoes.
Benefits of Vitamin B6:
Vitamin B6 helps maintain healthy brain function.
The vitamin plays a key role in synthesizing antibodies that are needed to fight various diseases.
Vitamin B6 helps in maintaining normal nerve function. It plays a crucial role in the synthesis of neurotransmitters such as dopamine and serotonin. It also assists normal nerve cell communication.
The vitamin helps in forming red blood cells.
It helps in breaking down and digesting proteins. So, the higher the protein intake, the greater is the requirement of vitamin B6.

Vitamin B12
Deficiency B12:
A deficiency in vitamin B12 can result in a host of illnesses like anemia, fatigue, weakness, constipation, loss of appetite, weight loss, depression, and poor memory, soreness of the mouth, asthma, vision problems, and a low sperm count. However, vitamin B12 deficiency is rare as the liver stores enough reserves to last a couple of years.
Sources:

Vitamin-B12-foods_autism.soveritas.com_
Make sure that your body is getting enough vitamin B12 by incorporating these foods in your diet: liver, meat, eggs, milk, cheese and some varieties of fish.
Benefits
It is needed to convert carbohydrates into glucose in the body, thus leading to energy production and a decrease in fatigue and lethargy in the body.
It helps in healthy regulation of the nervous system, reducing depression, stress, and brain shrinkage.
It helps maintain a healthy digestive system. Vitamin B12 also protects against heart disease by curbing and improving unhealthy cholesterol levels, protecting against stroke, and high blood pressure.
It is essential for healthy skin, hair, and nails. It helps in cell reproduction and constant renewal of the skin.
Vitamin B 12 helps protect against cancers including breast, colon, lung, and prostate cancer.
Getting the proper amount of B vitamins is an essential part of your overall health and a great blessing. Vitamin B1, B6 and B12 have particular benefits to multiple systems in your body.
It doesn’t take much to make sure you have enough, and most people find that they’re doing just fine in this department, but it doesn’t hurt to make sure.
Prevention:
Protects against Certain Cancers
The cancers it has been associated with helping include prostate, lung, breast, and colon cancer.
Protects Against Heart Disease
Helps Prevent Alzheimer’s Disease-
Health & Happiness
Boosts Energy Levels
Reduces Depression
Helps Metabolize Proteins
Around the Body
Good for Brain Health
Good for the Digestive System
Promotes Healthy Skin
Makes Hair Healthier
Good for the Nails
Heart Health
Helps with Cholesterol
Helps Maintain Healthy Blood Pressure
Helps Prevent Strokes
Prevents Nerve Damage
Improves Mood and Outlook
Protects Brain Health
Keeps You Looking and Feeling Young