Tell you where the most weak blood type
AB (immune resistance is weak, susceptible to diseases, should complement more vitamin C and selenium and fructose, etc.)
Type A (analogous to AB, physique weaker, should complement vitamin D, E, calcium and more fructose, etc.).

O (immunity, resistance, strong metabolism, calcium) should be paid attention to.
Type B (super than in type O, the constitution, the balanced).
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