One in six families have been impacted by INCEST, shocking report claims - and it's still legal to some extent in 19 states

Nearly one in six families have been impacted by incest at some point, according to a shocking new analysis that has not been peer reviewed.  

The taboo subject of incest is becoming increasingly discussed as at-home DNA tests from companies like Ancestry and 23&me become more common, revealing uncomfortable truths about family connections.

It has previously been estimated that as few as as 2 percent of Americans had experienced sexual contact with a family member. 

But a review of hundreds of studies by a sexual health company earlier this month estimated that 15 percent of US families have had an 'incest event.'

Dr David Lawson, a Texas-based psychologist who specializes in sexual abuse and trauma, told DailyMail.com that the true figure is likely higher: 'Whatever statistics you get, they’re probably conservative because these things are not things people tend to report.' 

According to World Population Review, a data aggregating site, inbreeding is most common in the states colored in red 

Incestual family relationships have garnered increased public interest after a 2004 documentary as well as exclusive DailyMail.com reporting about America's most inbred family, the Whittakers

A portrait of the 'blue' Fugate family depicted by artist Walt Spitzmiller for a 1982 edition of the Science journal

The results are from an analysis by the sexual health company BedBible, rather than a university or research team, and the methodology has not been made public.

There are no firm estimates for incest cases in the US because it often involves sexual abuse against a child and goes unreported.

But the new figure is not entirely out of sync with other estimates.

In her book Healing the Incest Wound: Adult Survivors in Therapy, psychologist Dr Christine Courtois says prevalence among women is as high as 20 percent - though that book is almost 40 years old.

More recent data have put the prevalence at between 2 and 10 percent.

Dr Lawson said: 'There’s only about less than 20 or 30 percent of people that were sexually abused within the family that actually disclose that sometime during childhood and most of them feel like they’re punished for that. 

‘The stats would probably be higher if the facts were known.'

Meanwhile, CDC research indicates that one in four girls and one in six boys are sexually abused before the age of 18 - the vast majority (91 percent) by someone the child or their family knows. 

BedBible says its researchers analyzed more than 290 published peer-reviewed articles including data from more than 11 million people spanning from 1980 to 2023.

In that time, it said, 10 to 15 percent of families had incest events in their family trees. The majority were girls, according to the analysis - with one in five girls victims of incest compared with one in 14 boys.

A quarter of cases involve two people not biologically related - such as a stepfather and stepdaughter - but the remainder are between two blood relatives.

Incest is still legal to some extent in 19 US states, where two first cousins can marry. Most of the states fall on the coasts and in the South. 

New data coming to light suggests that sex among even closer relations is fairly common. 

The most frequent type of incest is father-daughter incest (34.8 percent of all incest cases is father-daughter; 23.1 percent is brother-sister; 6.1 percent is mother-son).

Dr Lawson said early figures gathered in the 90s tended to consider only father-child and stepfather-stepchild incestual relationships, and the high figure as part of BedBible's analysis was likely due to researchers now giving more attention to sibling relationships.    

The vast majority of incest cases - 74 percent - take place within the biological family, but about a quarter of them involve a stepparent and stepchild.  

An estimated 32 million Americans reported to have been the victims of incest as a child, yet just 20 percent of incest victims report the crime to law enforcement, according to the report.

The report added that over 50 percent of pornography on Pornhub have an incestuous angle, which appears to reflect a dark fascination with inter-family sex.

The consequences of being a victim of incest can be severe. An estimated 93 percent of women who experience sexual abuse from their fathers develop eating disorders and nearly all have been diagnosed with depression. 

Sexual abuse victims are also 11 times more likely to become offenders themselves compared to people who were not abused.  

Ray, who can only communicate via barks and grunts, insisted on showing reporters around the property in Virginia

Home DNA tests to determine one's ancestry have been popular for years, and companies like 23&me and Ancestry DNA have helped point people in the direction of uncovering disturbing truths about their origins. 

One person who found out the disturbing truth about her family history was 39-year-old Victoria Hill, who, at a high school reunion, got chatting about family trees with an ex-boyfriend with whom she was once intimate.

Meanwhile, Virginia native Steve Edsel, found out via AncestryDNA that his parents were first-degree relatives, either siblings or father-daughter.

He radiated anger at the thought of the origins of his conception, likely the result of sexual assault of his mother carried out by his grandfather.

The companies themselves will not say explicitly whether someone's family had an 'incest event', but submitting DNA to third-party genealogy labs can answer that question. 

Incestual relationships seems to be more common in areas that tend to be more remote from larger metropolises. Around half of adults who carry out incest have been found to be unemployed. 

Nearly 84 percent of victims of incest are female, compared to about 16 percent of males.  

The Whittaker Family of Odd, West Virginia, lived in relative obscurity until a 2004 documentary followed by exclusive DailyMail.com reporting revealed the extent to which years of inbreeding had affected various generations.

One family member, Ray, could only communicate via barks and grunts; others were intellectually disabled and suffered other physical conditions. Many members of the family have suffered from a heart attack, while two did not make it through infancy.

Siblings Ray, Betty, Larry, and Lorene, and her son Timmy, live in a dilapidated homestead in West Virginia. A set of identical twin brothers sparked the family's history of incest, with the children of Henry and John Whittaker getting married and having their first child in 1937.

It’s not clear whether the early Whittakers were spurred on by a desire to keep their bloodline pure, as was the motivation of European royals, or if it was a function of living in a remote place with few opportunities for education and financial improvement.

The latter is believed to have been the impetus for the Kentucky-born Fugate family to intermarry. 

The graphic comes from BedBible, a sexual health and intimacy site, which conducted a metastudy spanning 292 different published and peer-reviewed articles

Commonly known as the Blue Fugates, the family settled in the US, starting with Martin Fugate in 1820, who arrived at Troublesome Creek with blue skin, the product of a certain gene mutation. He married Elizabeth Smith, who carried the same gene, though it was recessive.

Mother, 37, and son, 20, plead guilty to incest and avoid prison time 

Mother and son Monica Mares, 37, and Caleb Peterson, 20, from Clovis, New Mexico, pleaded guilty to fourth degree incest and were given three years probation. 

Of their seven children, four were reported to be blue. Today, most of the Fugate family descendants have lost their blue coloring, though the tint still comes out on their skin when they get cold or their tempers flare. 

Normally, a child gets an equal number of chromosomes from each parent, each one encoded with specific genes. 

If one parent has a recessive gene, such as one for blue eyes, it will be beaten out by the other parent’s dominant gene for brown eyes.

But in cases of incest, the parents may have those same recessive genes, which are then passed down to the child. 

First-cousin marriage is permitted in the following states: Alabama, Alaska, California, Colorado, Connecticut, the District of Columbia, Florida, Georgia, Hawaii, Maryland, Massachusetts, New Jersey, New Mexico, New York, North Carolina, Rhode Island, South Carolina, Tennessee, Vermont, and Virginia,

Some states allow first-cousin marriages, with some exceptions.

However, several states have evaded the law. 

Data aggregator World Population Review and legal and estate planning company Hive Law named the following states hotspots for inbreeding: Alabama, Kentucky, North Carolina, South Carolina, Tennessee, West Virginia, Virginia, South Dakota, Georgia, Indiana, Louisiana, Arkansas, Oklahoma, New Mexico, and Montana.

The recessive gene in the Fugates case was for a blood disorder called methemoglobinemia, which turned their skin blue.

The course of incestual relationships in which members of the family married their second cousins or closer was borne out of the fact that they lived far removed from other people, surrounded by dirt roads and an absence of railways and access to larger towns and cities.

However, breeding with a relative is thought to increase the risk of stillbirth and other problems for the child.

An Egyptian study in 2013 looked at more than 8,100 patients in a Cairo children’s hospital. 

DailyMail spoke with members of the family who said they were thrilled with their new creature comforts. Pictured: Timmy, Betty and Lorene. Pastor William Plumley told DailyMail.com that Timmy and Lorene had been members of the Good Hope congregation for many years and enjoy getting involved in the sermons

Over 93 percent of the patients who were deaf had parents who were related to one another. More than 76 percent of patients with mental retardation had related parents, and 92 percent had limb abnormalities.

The children of two cousins are likely to have lower IQs and higher rates of mental retardation. 

A 2014 study published in PLOS One that examined the IQs of 408 children found that those who were the product of inbreeding were short between 10 and 25 IQ points compared to those whose parents were not related.