The B group vitamins that help your skin are outlined below

Riboflavin & Niacin
Act as antioxidants, which stick to harmful compounds in the body and make them inactive. This slows the aging process and keeps your skin healthy and flexible.

Riboflavin
Helps make red blood cells so your skin has a good supply of oxygen.

Niacin
Your skin cells, hair and nails are continually dying and need constant replacement, Niacin helps maintain and replace them.

Folate
Helps to repair your skin when it has been damaged by cuts or bruising.

The digestive system is like a highway with lots of food traffic going through. With all this traffic, there is lots of wear and tear on the digestive tract lining so it must be constantly repaired.

The B group vitamins that help your digestive system are:

Thiamine
Diets with lots of carbohydrates, particularly processed bread, flour and cereal need more thiamine to break down the carbohydrate in your food to useful nutrients that can be easily absorbed by your body.

Riboflavin
Diets rich in proteins such as meat and dairy products need more riboflavin to break down the protein to useful nutrients.

Diets rich in glucose such as many sugary foods need more riboflavin to break down the glucose to useful nutrients.

Niacin
Is needed to help in the break down of proteins, fats and carbohydrates in your food to useful nutrients. etc...

The B group vitamins that help your nervous system are:

Niacin/ Thiamine
These vitamins help maintain the parts of your brain and nervous system and enables the nerves to work smoothly.

Folate
Folate is very important in the development of the spinal cord in babies in the first few weeks of growth inside the mother. A good supply of Folate in the early days of pregnancy is very important.

The B group vitamins that help your muscular system are:

Thiamine
Helps in the process of breaking down carbohydrates from foods such as bread, flour and cereals that you eat. Your body breaks down the carbohydrates to energy forms that can be used by muscles to contract and relax.

Riboflavin
Helps in the process of breaking down proteins from foods like meats and eggs to help build up your muscles strength and to give them energy. It also helps in the breakdown of glucose from sweet sugary foods to energy that is used by your muscles.
Muscles need energy to be active. Active muscles develop into bigger muscles. And so your muscles grow!

Thiamine
Your muscles know when and how to move because they get messages from your brain that travel along your nervous system telling them what to do. Thiamine helps keep your nervous system working properly so your muscles keep toned, co-ordinated and working well.

Folate
By helping body tissues grow and repair damage, Folate helps your muscles to develop and strengthen.

Blood in the veins carries away waste products to be removed through the kidneys and out of your body. The blood then returns to the heart via the lungs where it is refreshed with oxygen.

The B group vitamins that help your circulatory system are:

Thiamine
Your heart is a large muscle. Thiamine helps break down food to make energy so it also helps keep your heart muscle growing and pumping.

Riboflavin
Helps your red blood cells absorb oxygen and deliver it to all parts of your body.

Niacin
Helps your body reduce cholesterol levels so the blood vessels and heart don't get blocked. This means normal blood pressure is maintained so oxygen and nutrients can be freely sent all around your body.

Folate
Helps to make the red blood cells. This means the blood is rich in red blood cells and can perform its job as an oxygen delivery service, faster.

Folate helps lower the chances of getting heart disease by reducing the amount of homocysteine in your body. Doctors think homocysteine is a cause of heart disease.