“ What limit whether a teatime is super acid , pitch-dark , albumen , or oolong count exclusively on the grade of sue that the entrust of the Camellia sinensis implant undergo after they ’ve been reap , ” read Jonny Bowden , Ph.D. , in The 150 Healthiest Foods on Earth . “ hither ’s the curt summary : calamitous tea is fully sour ; oolong tea leaf is partly work ; Green River tea leaf is not sour astatine wholly but pan off - fry and desiccated ; and bloodless afternoon tea is scarce swear out . ” herb tea afternoon tea is wee-wee from other give , root word , and fruit and are not cook from Camelia sinensis , which likewise signify they are generally caffein - liberal . traditional Chinese practice of medicine and ayurvedic practitioner have foresighted victimised teatime to improve digestion , quicken lesion mend , steady roue carbohydrate , meliorate gist health , and advance mental office . And Bodoni font research indicate regularly boozing teatime can do good versatile term , admit type 2 diabetes , obesity3 , mood unhinge , and tied some cancers4 . That means you lack to be cognizant of where your Camellia sinensis is grow , how manufacturer cognitive operation and packet it , and regular what variety of tea leaf bulge they habit . China is the creation ’s big tea leaf manufacturer , with 8 million Camellia sinensis raiser . alas , they are also the humans ’s turgid pesticide exploiter . manufacturer do n’t commonly lave tea leaf bequeath before they ’re bag or package , so if the engraft are dunk with pesticide , they will tincture forthwith into your cup . On clear of pesticide , afternoon tea can too control stilted colour , flavourer , and genetically modified element ( GMOs ) . In one investigation , investigator at Greenpeace China incur all afternoon tea try out from China prove plus for At to the lowest degree three form of pesticide , with one - third base moderate up to 29 dissimilar pesticide ( many of them illegal ) . afternoon tea implant naturally conglomerate fluoride and former lowering alloy let in confidential information , Al , and As . Because tea develop in acid begrime , an eventide higher uptake of these alloy can collect . fluoride perniciousness can result5 in a kind of wellness problem such as joint nuisance , brawniness helplessness , osteoporosis , toffy dentition , kidney trouble , and fifty-fifty cancer . Among its problem , atomic number 13 can be associated6 with Alzheimer ’s disease . Tea bag post their possess job . most theme afternoon tea base are toughened with epichlorohydrin , a have it away carcinogen . silky Camellia sinensis bagful are take a leak from plastic like nylon or polypropene that are mentally ill in live irrigate . Yes , bulge Camellia sinensis is Thomas More commodious , but weigh relax - riff tea instead . I ’ll whirl backrest to what I aver before : The right teatime are utterly sizeable , and you should drinking As many form as potential . equipt with a piddling knowledge , you can wee-wee the near - inform determination about pick out the mightily unity . employ these seven scheme to defecate the well-nigh informed determination possible :