Do you say something?

I dont. I chuckle and move along. People don't want to hear the truth unless it is convenient or it absolves them.

Plus, what is a "weight loss doctor"? I'm not from the USA so this is very strange to me.

I usually say something when the "Detox" or "Cleanse" folks start their pitch. Which will be in a few months when the "New Year, New You" stuff happens. My answer is usually from the Harvard Detox study (See Below)


The body's own detox system

We tend to forget that the body is equipped with a detoxification system of its own, which includes the following:

The skin. The main function of the body's largest organ is to provide a barrier against harmful substances, from bacteria and viruses to heavy metals and chemical toxins. The skin is a one-way defense system; toxins are not eliminated in perspiration.

The respiratory system. Fine hairs inside the nose trap dirt and other large particles that may be inhaled. Smaller particles that make it to the lungs are expelled from the airways in mucus.

The immune system. This exquisitely orchestrated network of cells and molecules is designed to recognize foreign substances and eliminate them from the body. Components of the immune system are at work in blood plasma, in lymph, and even in the small spaces between cells.

The intestines. Peyer's patches — lymph nodes in the small intestine — screen out parasites and other foreign substances before nutrients are absorbed into the blood from the colon.

The liver. Acting as the body's principal filter, the liver produces a family of proteins called metallothioneins, which are also found in the kidneys. Metallothioneins not only metabolize dietary nutrients like copper and zinc but also neutralize harmful metals like lead, cadmium, and mercury to prepare for their elimination from the body. Liver cells also produce groups of enzymes that regulate the metabolism of drugs and are an important part of the body's defense against harmful chemicals and other toxins.

The kidneys. The fact that urine tests are used to screen for drugs and toxins is a testament to the kidneys' remarkable efficiency in filtering out waste substances and moving them out of the body.


The bottom line

The human body can defend itself very well against most environmental insults and the effects of occasional indulgence (see "The body's own detox system"). If you're generally healthy, concentrate on giving your body what it needs to maintain its robust self-cleaning system — a healthful diet, adequate fluid intake, regular exercise, sufficient sleep, and all recommended medical check-ups. If you experience fatigue, pallor, unexplained weight gain or loss, changes in bowel function, or breathing difficulties that persist for days or weeks, visit your doctor instead of a detox spa.

I usually don't say anything, or I'll just say what I am doing if we're having a conversation. People just do not want to hear anything contradictory to their beliefs and I don't want to waste my time.

Only if they specifically ask me my opinion or try to sell me one of the 'magic' what-evers.

I know I shouldn't but usually the urge to say something is too great and I end up getting sucked in

Rather than stating anything, I will sometimes ASK. "Wow, that's really interesting. Where did you hear about that?" is a nice, non-confrontational way to check sources.