Food provides more than nutrition. It offers emotional satisfaction, 
social connection, and cultural meaning. Yet before it can benefit 
the body, it must be broken down into usable nutrients—glucose, 
amino acids, fatty acids, vitamins, and minerals—through diges-
tion for absorption. This process relies on both mechanical and 
chemical digestion, after which nutrients are absorbed into the 
bloodstream or lymph and delivered to cells.
With age—particularly after 50 or 60—the digestive system 
becomes less efficient. This affects how food is processed, trans-
ported, and absorbed, often leading to indigestion, reduced 
nutrient intake, and constipation. Delayed gastric emptying can 
cause bloating and early fullness, while reduced enzyme and acid 
production may impair nutrient release and utilization, contrib-
uting to nutrient deficiencies. Longevity science has identified 
ways to help the body more effectively convert food into essential 
nutrients.
The foundation is a varied diet rich in vegetables, fruits, and nuts, 
supported when needed by digestive enzymes and stomach acid. 
Supplementation with vitamins and trace minerals may also help. 
While debated, supplementation can be an important component 
of a longevity-focused approach.
Less recognized is the chronic harm food itself may cause through 
delayed, persistent reactions in the gut. Unlike acute food allergies, 
these reactions can occur hours or days later and are often linked 
to increased intestinal permeability. Over time, they may drive 
abnormal immune activation and chronic inflammation.
Normally, the intestinal lining acts as a tightly regulated barrier, 
allowing only properly digested nutrients into circulation. In 
chronic food sensitivity, certain foods—such as milk proteins, 
gluten, or eggs—can trigger repeated immune responses. This may 
inflame the gut lining, widen cellular gaps, and allow partially 
digested particles and toxins to “leak” into the bloodstream. The 
immune system reacts by releasing inflammatory mediators, cre-
ating a cycle in which inflammation damages the barrier, allowing 
further leakage and continued immune activation.
This chronic inflammation may present as bloating, abdominal 
pain, diarrhea, or constipation, and may also contribute to eczema, 
neuropsychiatric symptoms, and autoimmune disease. It can 
impair enzyme production and reduce absorption of key nutri-
ents—including protein, vitamin B12, iron, calcium, and folate—
leading to anemia, weight loss, and other deficiencies.
正常食物带来的是营养，还有其他，诸如心理和情感上的满足，社交，
文化归属，感官享受等，益处。民以食为天，可见其利之多，其必要性。
食物吃进去后，要转化为身体能利用的营养（如葡萄糖、氨基酸、脂肪
酸、维生素、矿物质等），需要经过一个完整而复杂的消化与吸收过
程。这个过程主要由消化系统负责，包括机械性消化（物理粉碎、搅
拌）和化学性消化（酶和消化液分解大分子），最终通过吸收进入血液
或淋巴，再运输到全身细胞使用。
随着年龄增长（尤其是50-60岁以后），消化系统老化影响消化效率、
食物运输和特定营养吸收，容易导致消化不良、营养摄入不足、便秘
等问题。典型的例子就是，胃排空延迟在胃里停留时间延长，导致早
饱、腹胀、餐后不适。消化酶分泌减少和吸收功能下降，吃进去的食物
不能释放营养到体内，导致微营养不良。
事实上，长寿健康科学已经把如何帮助正常食物进入体内转化为必
需的营养的方法搞清楚了。 这里的秘诀就是丰富的饮食，特别是新
鲜蔬菜和水果，坚果等，同时要通过补充帮助消化的消化酶和酸达
到效果。另外，就是直接补充相应的微量元素，维生素等营养物质。所
以，服用营养素始终有争议，在我看来，是长寿健康的必需。
更加容易忽视，或者尚且不被了解的是，食物本身对于身体的慢性伤
害。这里指的是食物在肠道引发的慢性过敏。这种慢性过敏与典型的
急性IgE介导食物过敏（立即出现荨麻疹、休克等）不同，它通常反应
延迟（几小时到几天），症状温和但持久，常与¬肠道屏障受损¬（肠道
通透性增加）形成恶性循环。这种慢性过程主要通过¬免疫异常激活
¬和¬炎症持续¬伤害人体健康。
正常肠道黏膜像一道严密的“屏障”，只允许消化好的小分子营养（如
氨基酸、葡萄糖）通过细胞间紧密连接进入血液。慢性过敏时，某些食
物（如牛奶蛋白、麸质、鸡蛋等）反复刺激肠道，引发局部免疫反应（T
细胞介导或IgG抗体参与），导致肠黏膜发炎、水肿、绒毛萎缩或细胞
间隙增大。未完全消化的食物大分子、细菌毒素或代谢废物“漏”进血
液和淋巴，免疫系统误把它们当成“敌人”，持续产生抗体和炎症介质
（如组胺、细胞因子、TNF-α等）。这形成¬恶性循环¬：炎症进一步破
坏屏障，更多物质漏出，更强免疫攻击。
这种慢性炎症¬引起腹痛、腹胀、腹泻、便秘，也是皮肤湿疹，精神症
状，自身免疫病的根源等。 炎症损伤消化酶分泌和吸收面积，造成¬
营养吸收不良¬（尤其是蛋白质、维生素B12、铁、钙、叶酸等），可能出
现低蛋白血症、贫血、体重减轻。
108
BALLIET + WANG LUXURY LIVING 

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