Dr. Mehmet Oz examined a range of health topics, including sunscreen safety, multivitamins, and qigong for stress and weight loss on the July 22 episode of the Dr. Oz Show.
Dr. Oz's guest was Dr. Andrew Weil, a Harvard-educated neuropathic physician who champions holistic medicine. Dr. Weil does not believe most commercial sunscreens are safe because they contain the chemical oxybenzone, which can disrupt hormones, and retinol, which may promote skin cancer.
Toxicology experts, including the Environmental Working Group, warned that oxybenzone is a hormone disruptor that can cause cell damage linked to skin cancer, CNN reported.
Dr. Weil said most chemical sunscreens don't block damaging UVA rays, which is why he advocates using botanical sunscreens that contain titanium dioxide and zinc oxide.
Another controversial health topic Weil addressed was whether we need multivitamins. Dr. Weil is shocked by recent press reports slamming multivitamins as a waste of money. Weil said multivitamins are safe and beneficial, but he suggested not taking more than 250 mg of vitamin C daily and avoiding iron unless you're anemic or menstruating.
Qigong Promotes Weight Loss and Relieves Stress
On a separate segment, Dr. Oz discussed the ancient Chinese practice of qigong. His guest was Karl Romain, a world champion kung fu master, who said qigong can reduce stress, depression and insomnia, and aid weight loss.
Qigong combines breathing exercises, martial arts, and flexibility moves to work your mind, body and spirit. The Chinese believe that aches and pains result from a blockage in qi, or vital energy. They believe that doing a series of fluid exercises can open up muscles, joints, and tendons so that energy can flow smoothly through the body.
Qigong may also be effective for alleviating depression. A recent study showed that qigong reduced depression in 96 women receiving radiation treatment for breast cancer, compared with a control group that didn't do qigong.
Romain said because qigong is low-intensity, it won't damage your joints and can be done at whatever pace you're comfortable with. Dr. Oz said doing these meditative moves can make you feel calm and promote restful sleep.
Other research suggests qigong enhances weight loss by reducing the stress-response hormones that fuel overeating and weight gain. Experts say qigong suppresses appetite and encourages healthy digestion.
“As you become more in tuned with what your body needs, you get more from what you eat, so you eat less,” said qigong master Alex Holland, president of the Asian Institute of Medical Studies.