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Why cancers are increasing with younger age groups

Posted on14 Sep 2022
Cancer occurs when genetic mutations cause cells grow uncontrollably and can occur in any organ or tissue of the body.

According to the World Health Organization, the condition is the second leading cause of death worldwide. Whereas cancer typically affects people ages 50 years and older, studies indicate that, since the 1990s, the incidence of certain cancers has been rising among those under 50 years old in many parts of the world.

Recently, researchers conducted a review of various studies to determine possible risk factors for early-onset cancer. They noted that lifestyle factors early in life such as diet, obesity, and environmental exposure may contribute to early onset cancer risk.

“The study provides [a substantial] view of the impact that diet, exercise, and environment might play in the development of early-onset cancers.” — Dr. Andrew K. Dingwall

The cancer types studied For the review, the researchers first analyzed global data from the years 2000 to 2012 on the incidence of 14 cancer types that have increased in incidence among adults under age 50.

These included:
  1. breast cancer
  2. colorectal cancer
  3. endometrial cancer
  4. esophageal cancer
  5. head and neck cancer
  6. kidney cancer
  7. multiple myeloma pancreatic cancer
  8. prostate cancer
  9. stomach cancer
  10. thyroid cancer

Lifestyle factors and cancer risk After analyzing the literature, they noted that increasing evidence suggests that there may be intervals of several decades between initial cellular damage and clinical cancer detection.

They further noted that increases in early-onset cancer correlate with rising lifestyle trends, including more westernized diets, lifestyles, and environments.

Lifestyle factors that may increase cancer risk include:
  • Westernized diet, which is defined as high in saturated fats, red meat, processed meat, sugar, and ultra-processed foods yet low in fruits, vegetables, whole grains, and fiber
  • Lower breastfeeding rates and increased formula milk consumption
  • Increased alcohol consumption
  • Smoking habits, including personal habits and second-hand smoke or in-utero exposure
  • Reduced sleep among children due to bright lights during the night
  • Night shift work, as this increases the incidence of cancer risk factors such as obesity and diabetes
  • Reproductive changes, including reduced age of menarche, reduced number of births, increased age at first and last birth, and increased oral contraceptive use
  • Physical inactivity and sedentary lifestyle Increased rates of Type 2 diabetes

The researchers further wrote that eight of the 14 cancers studied relate to the digestive system, indicating the importance of the oral and intestinal microbiome in cancer risk.


In particular, they highlighted nutrition, lifestyle factors, and higher antibiotic use as factors affecting the microbiome and increasing cancer risk.

This is absolutely why it is important to maintain a good and healthy functioning digestive system, as 8 out of 14 cancer studied relates back to the digestive system. Good Probiotics can help restore and balance the good gut flora VS the pathogenic bad bacteria, keeping the good balance of 80% good bacteria which is the key to good health. Probiotics help the body to balance this ratio of good and bad bacteria. Scientific studies have shown that poor intestinal health due to an imbalanced gut flora (usually dominated by pathogenic bad bacteria) is the main cause of many chronic health problems. 

Source: Medical New Today, Clinical Oncology

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