Daijiworld Media Network – New York

New York, Sep 18: A new study has revealed that a simple dietary staple—nuts and seeds—may offer more than just general health benefits. Researchers have found that vitamin B3, also known as niacin or nicotinamide, can help protect skin from harmful ultraviolet (UV) rays and may lower the risk of skin cancer.

The study, led by Vanderbilt University Medical Center, tracked over 33,000 U.S. veterans and found that those taking B3 supplements had a 14% lower risk of developing certain types of skin cancer. For individuals with a prior history of skin cancer, the reduction in risk increased significantly to 54%.

Vitamin B3, particularly in its nicotinamide form, helps repair DNA damage in skin cells caused by sun exposure—a key factor in the development of skin cancer. By supporting the skin’s natural repair processes and boosting cell resilience, this nutrient acts as a protective barrier against UV damage.

"I was very surprised at the degree of risk reduction," said Dr. Lee Wheless, study author and staff physician at the Tennessee Valley Healthcare System VA Medical Center, in an interview with NPR.

The findings, published in JAMA Dermatology, suggest that nicotinamide supplements may be especially beneficial for:

• Individuals at high risk for skin cancer

• Older adults or those with significant sun exposure

Nuts and seeds such as almonds, sunflower seeds, pistachios, and cashews are rich natural sources of this versatile vitamin, making it easily accessible through diet.

Experts, however, caution that people should consult their doctors before starting any supplements to ensure it fits their personal health needs.