As nanoparticles are actually toxic for human beings in many aspects then why are finding their application in medical biology if we can't take them as a drug or by any other mean.
In the same way, nanoparticles show very good effect on seed germination, but it is always a concern to use that cultivation as an intake by human beings, as scientist says these nanoparticles are not safe for us.
Nanoparticles used for formulating insoluble particle or toxic molecule to be used in various topics in a concentration lower than the toxic dose of both. you will make cytotoxicity study of your compounds and your nanoparticle complex and you will find that effective results on your studying model within safety margin and much lower than the toxic dose.
Drugs are also toxic..I hope you know that every substance is toxic, it is the dose which decides.
We have to evaluate the safety margin for every drug and similarly nanoparticles. Toxicity studies help us to determine the safe levels.
All nanoparticles are not toxic and toxicity depends on the way they are disperse into environment and also their types. Like powder form of nanoparticles can be easily dispersed into the environment and will have health effect . However, nanoparticles in colloidal state are stable and can't be dispersed into environment and are safe to use. Silver nano particles has antibacterial properties and already used in water filtration and refrigerator technology.
Nanoparticles are toxic as well as the drugs.
But when we use them in various fields such you have mentioned we have to evaluate the benefits in comparing with the side effects.
In addition to u have to study the toxicity level of the nanoparticles you are using and if they appeared as very toxic u have to exclude them from application.
Further more there's a new emerged science that studies the toxic effects of nanoparticles called nanotoxicity since our knowledge about nanoparticles still limited.
What about nutritional products like vitamins? I was approached a decade back by a Korean company for Vitamin AD3E. This a very price sensitive product in poultry business The company claimed that their product is made in nanoparticles- based technique and therefore is to be used 1/3rd the dose for the same volume and concentration (claimed much higher bioavailability right from the oral mucosa). Unfortunately, you cannot trust such claims until supported by relevant experiments. Is that viable?
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