A lot of factors can cause receding gums , including:
Gum disease
These are bacterial gum infections, because of bacteria, that damage gum tissues as well as the bone that holds the teeth in place. Gum disease is a primary reason behind gum recession. Usually, the initial phase of gum disease is not painful, therefore signs and symptoms usually go unnoticed. Not treated though, earlier symptoms may develop in to periodontitis.
Early stages of gum disease are often noticed along with minor symptoms including:
Red, swollen, or purple gums
Gums that feel tender to touch
Bleeding gums
Persistent Bad Breath
Inherited genes
Many people are prone to gum disease. Research has revealed that 30% of the population could be predisposed to gum disease, even if they take good care of their teeth.
Brushing too rigorously

Mouthwash To Help Receding Gums

Whenever you brush your teeth too vigorously or wrongly, it may cause your tooth’s enamel to wear away as well as your gums to recede. Brush your teeth with proper amount of pressure. Its Smart-Pressure-Sensor system warns you if brushing vigorously to keep your gums secure.
Poor dental hygiene
Inadequate brushing, flossing, and rinsing with anti-bacterial mouth wash, makes it easy for plaque to turn into tartar, a hard substance that forms on and between the teeth and can just be removed through a professional dental cleaning.
Hormonal Changes
Alterations in levels of estrogen over a female's life, such as age of puberty, pregnancy, and also the menopause, might make gums increasingly more sensitive and susceptible to gingival recession.
Inadequate Dental Care Routine
Agressive brushing, and rinsing by using antimicrobial mouth wash allows bacterial plaque to become calculus  - a hardened substance that builds in between your teeth and might be cleaned and taken off through a professional-teeth-cleaning.  It can cause gingival recession.
Cigarettes and tobacco products
Cigarette smokers ,and also other tobacco users, are very likely to build up sticky plaque that can lead to gingival recession. More info here Nature's smile gum balm
Clenching  or Grinding your teeth
Grinding or Clenching your teeth could possibly apply a lot more force on your teeth, that can cause your gums to recede.
Crowded teeth/Misalignment of the teeth
As soon as your teeth do not match equally, a lot of pressure might be applied on the gums and supporting bone, allowing gums to recede.
Can Receding Gums Re-grow Naturally?
Our mouth heals quicker in comparison with several other parts of the body.  You might have noticed this when you have bit the tongue or cheek. But, this rapid recovery might not relate to our gum tissue. If the gum tissues start receding, this means the tissue pulls back, uncovering tooth roots. Healthy gums fit tightly around the teeth, and protect them.  The gums stop protecting when they move back from the biting surface of your tooth toward the tooth root. A pocket/gap might develop between part of the gum line and your teeth. Harmful bacteria have an easier time accessing your tooth from this gap, ultimately leading to more dental cavities, and ultimately loss of your teeth.  Therefore, what is causing receding gums and how can they be avoided?
What are the Reasons behind Receding Gums?
The American Dental Assoc . claims that there is not a clear link between the way people brush their teeth and receding gum line.  Gum disease from Inappropriate oral health routines is seen as a proven root cause of receding gums. Seventy five per cent of adult population have gum disease and many of them don’t even know it.
Gum disease will start when bacterial plaque accumulates on the teeth and gums. When the plaque isn't taken off daily, the damaging bacteria in the plaque worsen and damage our gum tissue.  The protective tissues that holds your teeth in position is now damaged.  Gradually the swelling, inflammation, and inflammation might harm the gum tissues. This causes spaces known as pockets to form. These pockets help make place for more bacteria, making the problem even worse. Click To Read More Do Gums Grow Back Naturally?
Early on, gum disease or gum disease may be like red, inflammed gums that bleed easily. If you’re keeping up on the dental visits, your dentist must recognize it. An in depth cleaning may also help reset your oral health if you are flossing and brushing regularly.

Natural Ways To Help Receding Gums

If gum disease isn't cured and worsens, it will lead to periodontitis. If gum disease gets this bad, your dental professional may recommend a special dentist called a periodontist.
In advanced stages of gum disease, the gums aren't able to keep your teeth in position, that can cause them to become loose, fallout, or need removal from a dental professional. “Periodontitis is the real cause in Seventy Percent of tooth loss in adult people above age 40." The great thing is that the dental professional and periodontist might help prevent this and help you select the good daily dental health care routine.
Herbal Treatments for Receding Gums
There are various natural cures to treat receding gum line. However, always visit your dental professional to select the right solution for you. 
Listed below are some natural remedies to reverse receding gums:
Oil Pulling (a traditional Ayurvedic dental technique)
Oil pulling might greatly reduce harmful bacteria and dental plaque build-up that might lead to receding gums. Take Two tablespoons of oil inside your mouth and swish it for twenty five min's. After spitting the oil, you must wash your mouth with warm salt-water and brush your teeth.
Saltwater Mouth Rinse
You can get rid of swollen gums through rinsing your mouth with a salt water solution.  Do this thrice daily. 
Natural Aloe-vera
Natural Aloe-vera is beneficial in promoting teeth's health. Injecting Aloe-vera gel into inflammed gums can greatly improve your problem.
Green-tea
Drinking green-tea might protect against gum related problems and promote healthier gums and teeth.  Drink One or two cups of green-tea daily.

Natural Help For Receding Gums

Septilin Tablets
Septilin come in both syrup and tablet form.  Taking Septilin will probably greatly improve the results of your gum treatment solution. Take dosages as prescribed by your dental professional.
Turmeric-Gel 
Turmeric has anti-oxidant and anti inflammatory properties that will help to remove microbial plaque that's the major cause of receding gums.
N-3 fatty acids
Eat foods which contain omega-3 fatty acids. Just take 3 hundred mg of omega-3 fatty acids every day to help reduce gum irritation and improve gum to tooth attachment.
Peroxide
Rinse mouth using water and hydrogen peroxide solution. It will help to fix receding gum line. Do this two or three times a week.
Tea Tree Oil
The source of the Eu Journal of Dentistry exposes that tea tree oil is beneficial against the growth of pathogens in your mouth.
Flossing and brushing
Lightly brushing teeth and flossing twice a day can possibly promote healthier gums and teeth.
Treatment Costs & Insurance Plan
Cost of treatment depends upon what number of grafts are needed, the extent of the problem, and whether or not the tissue has been taken from the tissue bank or from the person's mouth. When the tissues are obtained from a cadaver, this procedure is much more costly.
Normally, gum grafts might cost ranging from $600 and $3,000 per tooth. Depending on your insurance plan, the process might be partially or fully covered.
Common Questions About Receding Gums
Can my oral hygiene routine have an effect on my gums?
Inadequate dental hygiene: just as much as regular flossing and brushing may help you prevent unhealthy gums, a change from your oral hygiene routine can increase your likelihood of developing gum health problems. Brushing and using dental floss is important! Several medicines: some non prescribed or even prescription medications might cause xerostomia.

Will Flossing Help Receding Gums?

Can gum disease cause gum recession?
Gingival recession often develops because of gingivitis and periodontitis (gum disease) - a prevalent problem, but most people don’t recognize it because it progresses progressively and causes no pain in the early stages.
Can receding gums be inherited?
You will be amazed, but gum recession can often be hereditary. A person might have delicate gum tissues naturally that can cause inflammation and increased chance of tooth decay. Another more common reason behind receding gums is over brushing or making use of a tooth brush with hard bristles